Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:23:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[node].size();++i) ^ user.cpp: In function ‘void bfs(int, int&)’: user.cpp:45:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[node].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:138:32: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%lld\n",max); ^ user.cpp:151:28: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%lld\n",max); ^