Compilare: main.cpp: In function 'void DFS(long long int)': main.cpp:55:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:94:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<sol.size(); j++) ~^~~~~~~~~~~ main.cpp:101:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<sol.size(); j++) ~^~~~~~~~~~~