#include<cstdio>
#include<string>
using namespace std;
using ll = long long;
using ull = unsigned long long;
#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 rep2(i, a, b) for (int i = (int)a; i < (int)(b); ++i)
#define rrep2(i, a, b) for (int i = (int)(b)-1; i >= (int)(a); --i)

int main(){
    ll N;
    scanf("%lld", &N);
    if(N < 10){
        printf("co");
        rep(_,N) printf("n");
        return 0;
    }
    int cubic = 0, ng = 10001;
    while(ng - cubic > 1){
        int mid = (ng + cubic) / 2;
        if(((ll)mid * mid + 1) * mid <= N) cubic = mid;
        else ng = mid;
    }
    N -= ((ll)cubic*cubic + 1)*cubic;
    int quotient_square = N/((ll)cubic*cubic);
    N %= (ll)cubic*cubic;
    int quotient_one = N/cubic;
    int remainder = N%cubic;
    string answer = "co";
    answer.resize(cubic*3 + quotient_square + quotient_one + remainder + 1);
    auto it = answer.begin() + 2;
    rep(_,remainder) *it++ = 'n';
    rep(_,quotient_one) *it++ = 'o';
    rep(_,cubic-1) *it++ = 'c';
    rep(_,cubic + quotient_square) *it++ = 'o';
    rep(_,cubic) *it++ = 'n';
    printf("%s\n", answer.c_str());
    return 0;
}