#include <bits/stdc++.h>
using namespace std;

string decommpress(string s) {
    string res = "";
    set<char> nupc = {'N', 'U', 'P', 'C'};
    set<char> one_or_two = {'1', '2'};
    for (auto&& c : s) {
        if (nupc.count(c)) {
            res.push_back(c);
        } else if (one_or_two.count(c)) {
            if (c == '2') res += res;
        } else {
            assert(false);
        }
    }
    return res;
}

int main() {
    int K;
    cin >> K;

    vector<string> compressed = {
        "N1U1P1C1",  // 0
        "N2U1P1C1",  // 1
        "N1U2P1C1",  // 2
        "N2U2P1C1",  // 3
        "N1U1P2C1",  // 4
        "N2U1P2C1",  // 5
        "N1U2P2C1",  // 6
        "N2U2P2C1",  // 7
        "N1U1P1C2",  // 8
        "N2U1P1C2",  // 9
        "N1U2P1C2",  // 10
        "N2U2P1C2",  // 11
        "N1U1P2C2",  // 12
        "N2U1P2C2",  // 13
        "N1U2P2C2",  // 14
        "N2U2P2C2",  // 15
    };

    vector<string> decompressed;
    for (auto t : compressed) {
        string t_decompressed = decommpress(t);
        decompressed.push_back(t_decompressed);
    }

    // ソートをしない
    // sort(decompressed.begin(), decompressed.end());

    cout << decompressed[K - 1] << endl;
}