Compilare: main.cpp: In function 'void dfs()': main.cpp:24:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(a[nod]<v[nod].size()) ~~~~~~^~~~~~~~~~~~~~ main.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a[nod]==v[nod].size()) ~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<rez.size()-1;i++) ~^~~~~~~~~~~~~