Compilare: user.cpp: In function ‘void fix()’: user.cpp:30:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (!S[c].empty()) { ^ user.cpp:31:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] temp_sol.push_back(n - S[c].front().first); ^ user.cpp:32:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] pop_heap(S[c].begin(), S[c].end()); ^ user.cpp:32:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] pop_heap(S[c].begin(), S[c].end()); ^ user.cpp:33:6: warning: array subscript has type ‘char’ [-Wchar-subscripts] S[c].pop_back(); ^ user.cpp: In function ‘int main()’: user.cpp:60:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[c].empty()) { ^ user.cpp:64:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] pair<int, int> chosen = *(S[c].begin()); ^ user.cpp:66:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] pop_heap(S[c].begin(), S[c].end()); ^ user.cpp:66:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] pop_heap(S[c].begin(), S[c].end()); ^ user.cpp:67:6: warning: array subscript has type ‘char’ [-Wchar-subscripts] S[c].pop_back(); ^ user.cpp:44:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pitici5.in", "r", stdin); ^ user.cpp:45:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pitici5.out", "w", stdout); ^