/in/foo.cc: In function 'int main()':
/in/foo.cc:27:25: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
  while (scanf("%lld", &n) != EOF)
                         ^
/in/foo.cc:26:12: warning: unused variable 'j' [-Wunused-variable]
  int n, i, j, q;
            ^