Compilare: main.cpp: In function 'void DFS(int, int, int)': main.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=V.size()-1;i++) ~^~~~~~~~~~~~ main.cpp:31:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=V.size()-1;i++) ~^~~~~~~~~~~~ main.cpp:33:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vec[V[i]].size()==nr_com+1) ~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vec[x].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=sol.size()-1;i++) ~^~~~~~~~~~~~~~