#include<bits/stdc++.h>

using namespace std;
string s(60005, ' ');
int cnt[20005], maxx = -1;
int main(){
  long long m;
  cin >> m;
  for (int i = 0; i < 40000; i += 2){
    s[i] = 'c', s[i + 1] = 'o';
  }
  for (int i = 20000 - 1; i >= 1; i--){
    while (i * (i + 1) / 2 <= m){
      cnt[i - 1]++;
      maxx = max(maxx, i);
      m -= i * (i + 1) / 2;
    }
  }
  for (int i = 0; i < maxx; i++){
    cout << "co";
    for (int j = 1; j <= cnt[i]; j++){
      cout << 'n';
    }
  }
  return 0;
}