using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var m = long.Parse(ReadLine());
        var dp = new long[15000];
        for (var i = 0L; i < dp.Length; ++i) dp[i] = (i + 1) * (i + 2) / 2;
        var count = new long[15000];
        var pos = 14999;
        var rest = m;
        while (rest > 0)
        {
            if (rest >= dp[pos])
            {
                ++count[pos];
                rest -= dp[pos];
            }
            else --pos;
        }
        var ans = new List<char>();
        for (var i = 0; i < count.Length; ++i)
        {
            ans.Add('c');
            ans.Add('o');
            for (var j = 0; j < count[i]; ++j) ans.Add('n');
        }
        WriteLine(string.Concat(ans));
    }
}