import * as fs from 'fs';

const input = String(fs.readFileSync("/dev/stdin", "utf8"));

const fp = input.slice(-1);

if(['2','4','5','7','9'].includes(fp)) {
  console.log('hon');
}else if(['0','6','1','8'].includes(fp)) {
  console.log('pon');
} else {
  console.log('bon');
}