foo.cc: In function 'int main()':
foo.cc:106:40: error: missing template arguments before '(' token
     if (ans1 == f[root][0]) ans2 = plus(ans2, d[root][0]);
                                        ^
foo.cc:107:40: error: missing template arguments before '(' token
     if (ans1 == f[root][1]) ans2 = plus(ans2, d[root][1]);
                                        ^
foo.cc:108:36: warning: format '%lld' expects argument of type 'long long int', but argument 3 has type 'int' [-Wformat=]
     printf("%d\n%lld\n", ans1, ans2);
                                    ^

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。