Compilare: user.cpp: In function ‘int main()’: user.cpp:29:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < graf[i].size() ; j++ ) ^ user.cpp:32:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( k = 0 ; k < graf[graf[i][j]].size() ; k++ ) ^ user.cpp:48:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( sol[i].size() == rez ) ^ user.cpp:55:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < sol[i].size() ; j++ ) ^ user.cpp:57:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( sol[i].size() + sol[sol[i][j]].size()-1 == rez ) ^ user.cpp:14:32: warning: unused variable ‘ct’ [-Wunused-variable] int i , p , x , j ,rez=0,k,ct; ^