foo.cc: In function 'int main()':
foo.cc:107:34: warning: format '%d' expects argument of type 'int', but argument 3 has type 'll {aka long long int}' [-Wformat=]
     printf("%d\n%d\n", ans1, ans2);
                                  ^

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