Eroare de compilare: user.cpp: In function ‘void check()’: user.cpp:16:32: error: no matching function for call to ‘nth_element(short int*, short int*, bool (&)(short int, short int))’ nth_element(o+1, o+m+1, cmp); ^ In file included from /usr/include/c++/6/algorithm:62:0, from user.cpp:2: /usr/include/c++/6/bits/stl_algo.h:4621:5: note: candidate: template<class _RAIter> void std::nth_element(_RAIter, _RAIter, _RAIter) nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, ^~~~~~~~~~~ /usr/include/c++/6/bits/stl_algo.h:4621:5: note: template argument deduction/substitution failed: user.cpp:16:32: note: deduced conflicting types for parameter ‘_RAIter’ (‘short int*’ and ‘bool (*)(short int, short int)’) nth_element(o+1, o+m+1, cmp); ^ In file included from /usr/include/c++/6/algorithm:62:0, from user.cpp:2: /usr/include/c++/6/bits/stl_algo.h:4660:5: note: candidate: template<class _RAIter, class _Compare> void std::nth_element(_RAIter, _RAIter, _RAIter, _Compare) nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, ^~~~~~~~~~~ /usr/include/c++/6/bits/stl_algo.h:4660:5: note: template argument deduction/substitution failed: user.cpp:16:32: note: deduced conflicting types for parameter ‘_RAIter’ (‘short int*’ and ‘bool (*)(short int, short int)’) nth_element(o+1, o+m+1, cmp); ^ user.cpp: In function ‘int main()’: user.cpp:41:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elimin.in", "r", stdin); ^ user.cpp:42:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elimin.out", "w", stdout); ^ user.cpp:43:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hi %hi %hi %hi", &m, &n, &r, &c); ^ user.cpp:48:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hi", &a[j][i]); ^ user.cpp:53:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hi", &a[i][j]); ^