#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;

using i64 = long long;

int main() {
    i64 m;
    cin >> m;
    stack<char> stk;
    for(int i = 10000; i >= 1; i --) {
        i64 w = i * (i + 1ll) / 2;
        while(m >= w) {
            stk.push('n');
            m -= w;
        }
        stk.push('o');
        stk.push('c');
    }
    while(stk.size()) {
        cout << stk.top();
        stk.pop();
    }
}