#include <metal_stdlib>

using namespace metal;
void main_1() {
  while (true) {
    if (false) {
    } else {
      break;
    }
    while (true) {
      if (true) {
      } else {
        break;
      }
      {
        if (false) {
        } else {
          break;
        }
      }
    }
  }
  return;
}

fragment void tint_symbol() {
  main_1();
  return;
}

