const input = require("fs").readFileSync("/dev/stdin", "utf8");
const lastChar = input.slice(-1);
switch (lastChar) {
    case "2":
    case "4":
    case "5":
    case "7":
    case "9":
        console.log("hon");
        break;
    case "0":
    case "1":
    case "6":
    case "8":
        console.log("pon");
        break;
    case "3":
        console.log("bon");
        break;
}