def Gauss(n):
    return (n + 1) * (n + 2)//2

M = int(input())
L = [0] * 20000
for i in range(19999, -1, -1):
    while M >= Gauss(i):
        L[i] += 1
        M -= Gauss(i)
ans = []
for i in range(20000):
    ans.append("co")
    for j in range(L[i]):
        ans.append("n")
        
print(*ans, sep="")