HQ sprite idx

#include <algorithm>
#include <iterator>
#include <iostream>

unsigned const bounds[] = {170, 350, 520, 720};

unsigned calc_HQ_sprite_idx(unsigned rating)
{
   auto const begin = std::begin(bounds);
   auto const end = std::end(bounds);
   auto const it = std::upper_bound(begin, end, rating);
   unsigned const idx = it - begin;

   std::cout << "Rating: " << rating << " = sprite[" << idx << "]\n";
   return idx;
}
int main()
{
   calc_HQ_sprite_idx(0);
   calc_HQ_sprite_idx(1000);
   calc_HQ_sprite_idx(500);
   calc_HQ_sprite_idx(520);
   return 0;
}