Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:50:24: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=]
printf("%lld\n",ans);
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:50:24: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=]
printf("%lld\n",ans);
^
