Compilare: user.cpp: In function ‘void perechi(int)’: user.cpp:42:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ( ( i<T[nod].size() ) && ( Mu[ T[nod][i] ].c == Mu[ T[nod][j] ].c ) ) ^ user.cpp: In function ‘int main()’: user.cpp:223:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i=0; i<rez.size(); i++ ) ^ user.cpp:199:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ulei.in","r",stdin); ^ user.cpp:200:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ulei.out","w",stdout); ^ user.cpp:202:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &t ); ^ user.cpp:205:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &n, &m ); ^ user.cpp:208:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d", &a, &b, &c ); ^