Detalii evaluare #58394515

Rezumat problemă

#2960 abx

Un număr natural n se numește putere dacă există două numere naturale a, b, a ≥ 1, b ≥ 2 astfel încât \(n = a^b\). De exemplu, numerele 32 , 169 , 1 sunt puteri (\(32 = 2^5\) , \(169 = 13^2\) , \(1 = 1^2\) ), iar 72 , 2000 și 31 nu sunt puteri.
Se citesc numerele naturale N , M și un șir de N numere naturale \(x_1, x_2, …, x_N\) din intervalul [1,M].

Pentru fiecare din cele N numere \(x_i\) determinați câte un număr natural \(r_i\) din intervalul [1,M], cu proprietatea că \(r_i\) este o putere și pentru orice altă putere p din intervalul [1,M] este îndeplinită condiția \(|x_i – r_i| ≤ |x_i – p|\), unde |x| reprezintă valoarea absolută a lui x (modulul).
Dacă există două puteri egal depărtate de \(x_i\) se va alege puterea cea mai mică. De exemplu pentru numărul 26, dintre puterile 25 și 27 va fi ales numărul 25.

Detalii

Problema abx Operații I/O abx.in/abx.out
Limita timp 1 secunde Limita memorie Total: 32 MB / Stivă 8 MB
Id soluție #58394515 Utilizator Arghira Radu (radeuoj)
Fișier abx.cpp Dimensiune 1.30 KB
Data încărcării 01 Iunie 2025, 11:55 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

abx.cpp: In function 'int main()':
abx.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i <= n; i++)

                          ^
abx.cpp:56:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i <= n; i++)

                          ^
abx.cpp:61:25: error: no match for 'operator!=' (operand types are 'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' and 'std::nullptr_t')
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                         ^
abx.cpp:61:25: note: candidates are:
In file included from /usr/include/c++/4.8/set:60:0,
                 from abx.cpp:6:
/usr/include/c++/4.8/bits/stl_tree.h:302:7: note: bool std::_Rb_tree_const_iterator<_Tp>::operator!=(const _Self&) const [with _Tp = long long unsigned int; std::_Rb_tree_const_iterator<_Tp>::_Self = std::_Rb_tree_const_iterator<long long unsigned int>]
       operator!=(const _Self& __x) const
       ^
/usr/include/c++/4.8/bits/stl_tree.h:302:7: note:   no known conversion for argument 1 from 'std::nullptr_t' to 'const _Self& {aka const std::_Rb_tree_const_iterator<long long unsigned int>&}'
In file included from /usr/include/c++/4.8/iosfwd:40:0,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/postypes.h:221:5: note: template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
     ^
/usr/include/c++/4.8/bits/postypes.h:221:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::fpos<_StateT>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/stl_pair.h:227:5: note: template<class _T1, class _T2> constexpr bool std::operator!=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^
/usr/include/c++/4.8/bits/stl_pair.h:227:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::pair<_T1, _T2>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:303:5: note: template<class _Iterator> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator!=(const reverse_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:303:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::reverse_iterator<_Iterator>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:353:5: note: template<class _IteratorL, class _IteratorR> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator!=(const reverse_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:353:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::reverse_iterator<_Iterator>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1043:5: note: template<class _IteratorL, class _IteratorR> bool std::operator!=(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator!=(const move_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1043:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::move_iterator<_Iterator>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1049:5: note: template<class _Iterator> bool std::operator!=(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator!=(const move_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1049:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::move_iterator<_Iterator>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/string:41:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:138:5: note: template<class _T1, class _T2> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_T2>&)
     operator!=(const allocator<_T1>&, const allocator<_T2>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:138:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::allocator<_CharT>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/string:41:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:143:5: note: template<class _Tp> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_CharT>&)
     operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:143:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::allocator<_CharT>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2532:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2532:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2544:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator!=(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2544:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   mismatched types 'const _CharT*' and 'std::_Rb_tree_const_iterator<long long unsigned int>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2556:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2556:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::basic_string<_CharT, _Traits, _Alloc>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/locale_facets.h:48:0,
                 from /usr/include/c++/4.8/bits/basic_ios.h:37,
                 from /usr/include/c++/4.8/ios:44,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from abx.cpp:1:
/usr/include/c++/4.8/bits/streambuf_iterator.h:210:5: note: template<class _CharT, class _Traits> bool std::operator!=(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)
     operator!=(const istreambuf_iterator<_CharT, _Traits>& __a,
     ^
/usr/include/c++/4.8/bits/streambuf_iterator.h:210:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::istreambuf_iterator<_CharT, _Traits>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/vector:64:0,
                 from /usr/include/c++/4.8/bits/random.h:34,
                 from /usr/include/c++/4.8/random:50,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/stl_vector.h:1428:5: note: template<class _Tp, class _Alloc> bool std::operator!=(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
     operator!=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^
/usr/include/c++/4.8/bits/stl_vector.h:1428:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::vector<_Tp, _Alloc>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:409:5: note: template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m> bool std::operator!=(const std::linear_congruential_engine<_UIntType, __a, __c, __m>&, const std::linear_congruential_engine<_UIntType, __a, __c, __m>&)
     operator!=(const std::linear_congruential_engine<_UIntType, __a,
     ^
/usr/include/c++/4.8/bits/random.h:409:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::linear_congruential_engine<_UIntType, __a, __c, __m>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:641:5: note: template<class _UIntType, unsigned int __w, unsigned int __n, unsigned int __m, unsigned int __r, _UIntType __a, unsigned int __u, _UIntType __d, unsigned int __s, _UIntType __b, unsigned int __t, _UIntType __c, unsigned int __l, _UIntType __f> bool std::operator!=(const std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&, const std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)
     operator!=(const std::mersenne_twister_engine<_UIntType, __w, __n, __m,
     ^
/usr/include/c++/4.8/bits/random.h:641:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:840:5: note: template<class _UIntType, unsigned int __w, unsigned int __s, unsigned int __r> bool std::operator!=(const std::subtract_with_carry_engine<_UIntType, __w, __s, __r>&, const std::subtract_with_carry_engine<_UIntType, __w, __s, __r>&)
     operator!=(const std::subtract_with_carry_engine<_UIntType, __w,
     ^
/usr/include/c++/4.8/bits/random.h:840:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::subtract_with_carry_engine<_UIntType, __w, __s, __r>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:1062:5: note: template<class _RandomNumberEngine, unsigned int __p, unsigned int __r> bool std::operator!=(const std::discard_block_engine<_RandomNumberEngine, __p, __r>&, const std::discard_block_engine<_RandomNumberEngine, __p, __r>&)
     operator!=(const std::discard_block_engine<_RandomNumberEngine, __p,
     ^
/usr/include/c++/4.8/bits/random.h:1062:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::discard_block_engine<_RandomNumberEngine, __p, __r>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:1258:5: note: template<class _RandomNumberEngine, unsigned int __w, class _UIntType> bool std::operator!=(const std::independent_bits_engine<_RandomNumberEngine, __w, _UIntType>&, const std::independent_bits_engine<_RandomNumberEngine, __w, _UIntType>&)
     operator!=(const std::independent_bits_engine<_RandomNumberEngine, __w,
     ^
/usr/include/c++/4.8/bits/random.h:1258:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::independent_bits_engine<_RandomNumberEngine, __w, _UIntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:1510:5: note: template<class _RandomNumberEngine, unsigned int __k> bool std::operator!=(const std::shuffle_order_engine<_RandomNumberEngine, __k>&, const std::shuffle_order_engine<_RandomNumberEngine, __k>&)
     operator!=(const std::shuffle_order_engine<_RandomNumberEngine,
     ^
/usr/include/c++/4.8/bits/random.h:1510:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::shuffle_order_engine<_RandomNumberEngine, __k>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:1825:5: note: template<class _IntType> bool std::operator!=(const std::uniform_int_distribution<_IntType>&, const std::uniform_int_distribution<_IntType>&)
     operator!=(const std::uniform_int_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:1825:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::uniform_int_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:2034:5: note: template<class _IntType> bool std::operator!=(const std::uniform_real_distribution<_IntType>&, const std::uniform_real_distribution<_IntType>&)
     operator!=(const std::uniform_real_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:2034:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::uniform_real_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:2283:5: note: template<class _RealType> bool std::operator!=(const std::normal_distribution<_RealType>&, const std::normal_distribution<_RealType>&)
     operator!=(const std::normal_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:2283:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::normal_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:2487:5: note: template<class _RealType> bool std::operator!=(const std::lognormal_distribution<_RealType>&, const std::lognormal_distribution<_RealType>&)
     operator!=(const std::lognormal_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:2487:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::lognormal_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:2707:6: note: template<class _RealType> bool std::operator!=(const std::gamma_distribution<_RealType>&, const std::gamma_distribution<_RealType>&)
      operator!=(const std::gamma_distribution<_RealType>& __d1,
      ^
/usr/include/c++/4.8/bits/random.h:2707:6: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::gamma_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:2917:5: note: template<class _RealType> bool std::operator!=(const std::chi_squared_distribution<_RealType>&, const std::chi_squared_distribution<_RealType>&)
     operator!=(const std::chi_squared_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:2917:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::chi_squared_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:3084:5: note: template<class _RealType> bool std::operator!=(const std::cauchy_distribution<_RealType>&, const std::cauchy_distribution<_RealType>&)
     operator!=(const std::cauchy_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:3084:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::cauchy_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:3340:5: note: template<class _RealType> bool std::operator!=(const std::fisher_f_distribution<_RealType>&, const std::fisher_f_distribution<_RealType>&)
     operator!=(const std::fisher_f_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:3340:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::fisher_f_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:3553:5: note: template<class _RealType> bool std::operator!=(const std::student_t_distribution<_RealType>&, const std::student_t_distribution<_RealType>&)
     operator!=(const std::student_t_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:3553:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::student_t_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:3729:3: note: bool std::operator!=(const std::bernoulli_distribution&, const std::bernoulli_distribution&)
   operator!=(const std::bernoulli_distribution& __d1,
   ^
/usr/include/c++/4.8/bits/random.h:3729:3: note:   no known conversion for argument 1 from 'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' to 'const std::bernoulli_distribution&'
/usr/include/c++/4.8/bits/random.h:3995:5: note: template<class _IntType> bool std::operator!=(const std::binomial_distribution<_IntType>&, const std::binomial_distribution<_IntType>&)
     operator!=(const std::binomial_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:3995:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::binomial_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:4164:5: note: template<class _IntType> bool std::operator!=(const std::geometric_distribution<_IntType>&, const std::geometric_distribution<_IntType>&)
     operator!=(const std::geometric_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:4164:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::geometric_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:4409:5: note: template<class _IntType> bool std::operator!=(const std::negative_binomial_distribution<_IntType>&, const std::negative_binomial_distribution<_IntType>&)
     operator!=(const std::negative_binomial_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:4409:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::negative_binomial_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:4625:5: note: template<class _IntType> bool std::operator!=(const std::poisson_distribution<_IntType>&, const std::poisson_distribution<_IntType>&)
     operator!=(const std::poisson_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:4625:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::poisson_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:4803:5: note: template<class _RealType> bool std::operator!=(const std::exponential_distribution<_RealType>&, const std::exponential_distribution<_RealType>&)
     operator!=(const std::exponential_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:4803:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::exponential_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:5006:5: note: template<class _RealType> bool std::operator!=(const std::weibull_distribution<_RealType>&, const std::weibull_distribution<_RealType>&)
     operator!=(const std::weibull_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:5006:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::weibull_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:5209:5: note: template<class _RealType> bool std::operator!=(const std::extreme_value_distribution<_RealType>&, const std::extreme_value_distribution<_RealType>&)
     operator!=(const std::extreme_value_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:5209:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::extreme_value_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:5469:5: note: template<class _IntType> bool std::operator!=(const std::discrete_distribution<_IntType>&, const std::discrete_distribution<_IntType>&)
     operator!=(const std::discrete_distribution<_IntType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:5469:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::discrete_distribution<_IntType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:5736:5: note: template<class _RealType> bool std::operator!=(const std::piecewise_constant_distribution<_RealType>&, const std::piecewise_constant_distribution<_RealType>&)
     operator!=(const std::piecewise_constant_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:5736:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::piecewise_constant_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/bits/random.h:6006:5: note: template<class _RealType> bool std::operator!=(const std::piecewise_linear_distribution<_RealType>&, const std::piecewise_linear_distribution<_RealType>&)
     operator!=(const std::piecewise_linear_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.h:6006:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::piecewise_linear_distribution<_RealType>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/tuple:39:0,
                 from /usr/include/c++/4.8/functional:55,
                 from /usr/include/c++/4.8/bits/stl_algo.h:66,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/array:233:5: note: template<class _Tp, unsigned int _Nm> bool std::operator!=(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)
     operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
     ^
/usr/include/c++/4.8/array:233:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::array<_Tp, _Nm>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/functional:55:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:66,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/tuple:835:5: note: template<class ... _TElements, class ... _UElements> constexpr bool std::operator!=(const std::tuple<_Elements ...>&, const std::tuple<_Elements ...>&)
     operator!=(const tuple<_TElements...>& __t,
     ^
/usr/include/c++/4.8/tuple:835:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::tuple<_Elements ...>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/functional:2555:5: note: template<class _Res, class ... _Args> bool std::operator!=(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t)
     operator!=(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
     ^
/usr/include/c++/4.8/functional:2555:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::function<_Res(_ArgTypes ...)>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0,
                 from /usr/include/c++/4.8/algorithm:62,
                 from abx.cpp:2:
/usr/include/c++/4.8/functional:2561:5: note: template<class _Res, class ... _Args> bool std::operator!=(std::nullptr_t, const std::function<_Res(_ArgTypes ...)>&)
     operator!=(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
     ^
/usr/include/c++/4.8/functional:2561:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   cannot convert 'lbm' (type 'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}') to type 'std::nullptr_t'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/set:60:0,
                 from abx.cpp:6:
/usr/include/c++/4.8/bits/stl_tree.h:316:5: note: template<class _Val> bool std::operator!=(const std::_Rb_tree_iterator<_Tp>&, const std::_Rb_tree_const_iterator<_Val>&)
     operator!=(const _Rb_tree_iterator<_Val>& __x,
     ^
/usr/include/c++/4.8/bits/stl_tree.h:316:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::_Rb_tree_iterator<_Tp>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/set:60:0,
                 from abx.cpp:6:
/usr/include/c++/4.8/bits/stl_tree.h:927:5: note: template<class _Key, class _Val, class _KeyOfValue, class _Compare, class _Alloc> bool std::operator!=(const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&, const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&)
     operator!=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     ^
/usr/include/c++/4.8/bits/stl_tree.h:927:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/set:61:0,
                 from abx.cpp:6:
/usr/include/c++/4.8/bits/stl_set.h:778:5: note: template<class _Key, class _Compare, class _Alloc> bool std::operator!=(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)
     operator!=(const set<_Key, _Compare, _Alloc>& __x,
     ^
/usr/include/c++/4.8/bits/stl_set.h:778:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::set<_Key, _Compare, _Alloc>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^
In file included from /usr/include/c++/4.8/set:62:0,
                 from abx.cpp:6:
/usr/include/c++/4.8/bits/stl_multiset.h:763:5: note: template<class _Key, class _Compare, class _Alloc> bool std::operator!=(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)
     operator!=(const multiset<_Key, _Compare, _Alloc>& __x,
     ^
/usr/include/c++/4.8/bits/stl_multiset.h:763:5: note:   template argument deduction/substitution failed:
abx.cpp:61:28: note:   'std::set<long long unsigned int>::iterator {aka std::_Rb_tree_const_iterator<long long unsigned int>}' is not derived from 'const std::multiset<_Key, _Compare, _Alloc>'
         ull best = (lbm != nullptr && a[i] - *lbm <= *lb - a[i]) ? *lbm : *lb;

                            ^

Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:

  • probleme la care rezolvarea presupune scrierea unui program complet
  • probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.

Problema abx face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:

  • Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
  • Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.

Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.