Compilare: user.cpp: In function ‘void DEI(int, int)’: user.cpp:52:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < V[left].size(); i++) ^ user.cpp:103:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < V[i].size(); j++) ^ user.cpp:139:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < V2[i].size(); j++) ^ user.cpp: In function ‘int main()’: user.cpp:202:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("razbunare.out", "w", stdout); ^