# -*- coding: utf-8 -*-

import itertools


def unzip(s: str):
    t = ""
    for i in range(8):
        if (i + 1) % 2 == 0:
            if s[i] == "1":
                pass
            else:  # s[i] == 2
                t = t + t
        else:  # (i + 1) % 2 == 1
            t = t + s[i]
    return t


k = int(input())
candidates = [
    "N" + s2 + "U" + s4 + "P" + s6 + "C" + s8
    for s2, s4, s6, s8 in itertools.product(["1", "2"], repeat=4)
]
order = sorted(map(unzip, candidates))

print(order[k - 1])