/in/foo.cc: In function 'int main()':
/in/foo.cc:10:14: error: expected primary-expression before '%' token
   scanf("%d",%x);
              ^
/in/foo.cc:14:25: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'long long int*' [-Wformat=]
     printf("%lld\n",&ans);
                         ^