/in/foo.cc: In function 'int query(int, int, int, int, int)':
/in/foo.cc:35:30: error: 'INF' was not declared in this scope
  if (x > r || y < l) return -INF;
                              ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:47:25: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]
  scanf("%d %lld", &n, &p);
                         ^