Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:12:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<graf[k].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(graf[i].size()>maxim) ^ user.cpp:55:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v.size(); i++) ^ user.cpp:57:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<graf[v[i]].size(); j++) ^