import sys
from collections import deque, Counter
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 63 - 1
mod = 998244353
import random
m = ii()
if m == 0:
    print("pleaseac")
    exit()
a = []
summ = 0
for i in range(10000, 0, -1):
    for j in range(i, 10000):
        if i * j <= m:
            k = m // (i * j)
            if i + j + k + summ > 60000:
                continue
            m -= i * j * k
            a.append((i, j, k))
            summ += i + j + k
            break

a.sort()

ans = []
si = 0
sj = 0
for i, j, k in a:
    ans += ['c'] * (i - si)
    ans += ['o'] * (j - sj)
    ans += ['n'] * k
    si += i
    sj += j
print(''.join(ans))