Compilare: user.cpp: In function ‘bool cupleaza(int)’: user.cpp:23:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < gr[nod].size(); ++i) { ^ user.cpp:33:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < gr[nod].size(); ++i) { ^ user.cpp: In function ‘int getInt()’: user.cpp:56:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, LBUFF, stdin); ^ user.cpp:66:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, LBUFF, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:75:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaje.in", "r", stdin); ^ user.cpp:76:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaje.out", "w", stdout); ^