#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <atcoder/modint>
using namespace std;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;
#define rep(i,n) for(int i=0; i<(int)(n); i++)
const i64 INF = 1001001001001001001;

using Modint = atcoder::static_modint<998244353>;


int main(){
    long long T; cin >> T;
    vector<i64> X(10001);
    for(i64 j=10000; j>=1; j--){
        X[j] = T / (j * j);
        T %= (j * j);
    }
    rep(i,10000){
        cout << "coc";
        cout << string(X[i+1], 'n');
    }
    cout << endl;
    return 0;
}



struct ios_do_not_sync{
    ios_do_not_sync(){
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} ios_do_not_sync_instance;