#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 <= 50000 ) {
        rep('c', 1);
        rep('o', 1);
        rep('n', M);
    }else {
        long long a, b, c;
        a = b = c = (long long)pow(M, 0.30);
        while( a <= 18000 ) {
            a++, b++, c++;
            for( long long d = 0; d <= 300; d++ ) {
                for( long long e = 0; e <= 300; e++ ) {
                    if( (M-a*b*c)%(a*b+a*e+d*e) == 0 && (M-a*b*c)/(a*b+a*e+d*e) <= 60000-a-b-c-d-e ) {
                        long long f = (M-a*b*c)/(a*b+a*e+d*e);
                        cerr << a << " " << b << " " << c << " " << d << " " << e << " " << f << endl;
                        rep('c', a);
                        rep('o', b);
                        rep('n', c);
                        rep('c', d);
                        rep('o', e);
                        rep('n', f);
                        return 0;
                    }
                }
            }
        }
    }
}