Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:15:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ^ user.cpp: In function ‘void dfscheck(int)’: user.cpp:29:29: 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:58:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<rasp.size();i++) g<<rasp[i]<<' '; ^