Compilare: user.cpp: In function ‘bool posibil(int)’: user.cpp:64:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < cnt.size(); i++) { ^ user.cpp:67:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (cnt[j] == cnt[i] && j < cnt.size()) ^ user.cpp: In function ‘int main()’: user.cpp:108:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poze.in", "r", stdin); ^ user.cpp:109:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poze.out", "w", stdout); ^ user.cpp:119:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.cpp:122:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &N, &M, &K); ^ user.cpp:125:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &V[i][j]); ^