Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘void df(int)’: user.cpp:37:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘void solve()’: user.cpp:49:27: warning: integer overflow in expression [-Woverflow] { long long maxim=100000*100000+100000,h; ^