/in/foo.cc: In function 'int main()':
/in/foo.cc:138:25: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]
  scanf("%lld%lld",&x0,&m);
                         ^
/in/foo.cc:150:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%d\n",h[k].n);
                      ^