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()
a = []

cnt = 0

for i in range(20000):
    cnt += i
    a.append(cnt)

x = {}
for i in range(19999, 0, -1):
    if m - a[i] >= 0:
        x[i] = m // a[i]
        m -= a[i] * x[i]
ans = []
for i in range(1, 20001):
    ans.append('c')
    ans.append('o')
    if i in x:
        for _ in range(x[i]):
            ans.append('n')
print(''.join(ans))