Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:34:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < A[ nod ].size() ; ++i ) ^ user.cpp: In function ‘int gasit(int, int)’: user.cpp:77:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( A[ i ].size() < N - 1 ) ^ user.cpp:79:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < A[ X ].size() && ok == 0 ; ++i ) ^ user.cpp:84:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( A[ i ].size() == N - 1 ) ^ user.cpp: In function ‘void afiseaza()’: user.cpp:94:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < A[ i ].size() ; j++ ) ^ user.cpp: In function ‘void citire()’: user.cpp:77:20: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] if ( A[ i ].size() < N - 1 ) ^ user.cpp:73:15: note: ‘i’ was declared here int ok = 0, i; ^