#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  ll m;
  cin >> m;
  string s;
  int cnt[2]{};
  s += "co";
  cnt[0]++, cnt[1]++;
  while(m % 10000) {
    s += 'n';
    m--;
  }
  while(cnt[0] != 10000 - 1) {
    s += 'c';
    cnt[0]++;
  }
  s += 'o';
  cnt[1] += cnt[0];
  assert(cnt[1] == 10000);
  while(m % 10000'0000) {
    s += 'n';
    m -= 10000;
  }
  s += 'c';
  cnt[0]++;
  assert(cnt[0] == 10000);
  while(cnt[1] != 10000'0000) {
    s += 'o';
    cnt[1] += cnt[0];
  }
  while(m) {
    s += 'n';
    m -= 10000'0000;
  }
  cout << s << '\n';
}