Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:14:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[nod].size();i++) ^ user.cpp: In function ‘void DFST(int)’: user.cpp:27:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ta[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:59:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<solutii[i].size();j++) ^