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

void solve() {
    long long m;
    cin >> m;
    int x, y, z;
    z = m % 10000;
    m /= 10000;
    y = m % 10000;
    m /= 10000;
    x = m;

    string s;

    if (z == 0) {
        for (int i = 0; i < 10000; i++) {
            s.push_back('c');
        }
        s.push_back('o');
    } else if (z == 1) {
        s.push_back('c');
        s.push_back('o');
        s.push_back('n');
        for (int i = 0; i < 9998; i++) {
            s.push_back('c');
        }
        s.push_back('o');
        s.push_back('c');
    } else if (z == 3) {
        s.push_back('c');
        s.push_back('o');
        s.push_back('o');
        s.push_back('o');
        s.push_back('n');
        for (int i = 0; i < 9996; i++) {
            s.push_back('c');
        }
        s.push_back('o');
        for (int i = 0; i < 3; i++) {
            s.push_back('c');
        }
    } else {
        bool flag = z & 1;
        z /= 2;
        if (flag) {
            s.push_back('c');
            s.push_back('o');
            s.push_back('n');
            z -= 2;
        }

        for (int i = 0; i < z; i++) {
            s.push_back('c');
        }

        s.push_back('o');
        s.push_back('n');
        s.push_back('n');

        if (flag) {
            z += 2;
            s.push_back('c');
        }
        // (z, z, 2 * z + flag)

        for (int i = 0; i < (10000 - 2 * z); i++) {
            s.push_back('c');
        }
        s.push_back('o');

        for (int i = 0; i < z; i++) {
            s.push_back('c');
        }
    }
    // (10000, 10000, xxxx)

    if (y == 0) {
        for (int i = 0; i < 9999; i++) {
            s.push_back('o');
        }
    } else {
        for (int i = 0; i < (y - 1); i++) {
            s.push_back('o');
        }
        s.push_back('n');
        for (int i = 0; i < (10000 - y); i++) {
            s.push_back('o');
        }
    }

    // (10000, 100000000, xxxxxxxx)

    for (int i = 0; i < x; i++) {
        s.push_back('n');
    }

    cout << s << '\n';
}

int main() {
    int q = 1;
    // cin >> q;
    while (q--) {
        solve();
    }
}