#include <iostream>
#include <string>
using namespace std;
typedef long long ll;

int main(){
    long long M;
    cin >> M;
    long long c1 = M / 100000000;
    long long c2 = (M - c1 * 100000000) / 10000;
    long long c3 = M % 10000;
    string S = "";
    for (long long i = 0; i < c1; i++) S += 'c';
    for (long long i = 0; i < 10000; i++) S += 'o';
    for (long long i = 0; i < 9998; i++) S += 'n';

    for (long long i = 0; i < c2; i++) S += 'c';
    for (long long i = 0; i < 9999; i++) S += 'o';

    for (long long i = 0; i < c3; i++) S += 'c';
    S += 'o';
    S += 'n';
    
    cout << S << endl;
}