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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    vector<string> A;
    string s = "N0U0P0C0";

    for(int i=0; i<16; i++){
        for(int k=0; k<4; k++){
            if(i&(1<<k)) s.at(k*2+1) = '2';
            else s.at(k*2+1) = '1';
        }

        string t = "";
        for(int i=0; i<8; i++){
            if(i%2 == 0) t.push_back(s.at(i));
            else if(s.at(i) == '2') t += t;
        }
        A.push_back(t);
    }
    sort(A.begin(),A.end());

    int K; cin >> K;
    cout << A.at(K-1) << endl;
}