#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    long long M;
    cin >> M;
    auto rep = [](char c, long long t) -> void {
        for( int i = 1; i <= t; i++ ) {
            cout << c;
        }
    };
    if( M <= 59998 ) {
        rep('c', 1);
        rep('o', 1);
        rep('n', M);
    }else {
        long long m = (long long)pow(M, 0.25);
        for( int t = 0; t < 10000; t++, m++ ) {
            for( long long c = 0; c <= 300; c++ ) {
                for( long long o = c; o <= 300; o++ ) {
                    if( (M-(m*m*m))%(m*m+m*o+c*o) == 0 ) {
                        long long n = (M-(m*m*m))/(m*m+m*o+c*o);
                        rep('c', m);
                        rep('o', m);
                        rep('n', m);
                        rep('c', c);
                        rep('o', o);
                        rep('n', n);
                        return 0;
                    }
                }
            }
        }
    }
}