Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:12:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<w[x].size(); i++) ^ user.cpp: In function ‘void DFS1(int)’: user.cpp:22:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[x].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:46:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(print[cnt].size()>mx) ^ user.cpp:54:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(print[i].size()==mx) ^