Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:19:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i < gt[nod].size() ; i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:53:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0; j < drum[i].size(); j++ ) ^ user.cpp:72:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < drum[cur].size() ; i++ ) ^