/*#include <catch2/catch.hpp>
#include <ranges>
#include <vector>

int main() {
  auto const single_digits = std::vector<int>{
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  };

  more_single_digits.push_back(0);
  CHECK(ranges::count(more_single_digits, 0) == 2);
  more_single_digits.pop_back();
  CHECK(ranges::count(more_single_digits, 0) == 1);
  CHECK(std::erase(more_single_digits, 0) == 1);
  CHECK(ranges::count(more_single_digits, 0) == 0);
  CHECK(ranges::distance(more_single_digits) == 8);
}*/