Compilare: user.cpp: In function ‘int main()’: user.cpp:52:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j < H[i].size(); ++ j) { ^ user.cpp:25:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subpermutari.in", "r", stdin); ^ user.cpp:26:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subpermutari.out", "w", stdout); ^