require 'prime'

M = gets.to_i

m = M
c1 = m / (10 ** 8)
m %= (10 ** 8)
c2 = m / (10 ** 4)
m %= (10 ** 4)
c3 = m

puts ['c' * c1, 'o' * 10 ** 4, 'n' * 9998, 'c' * c2, 'o' * 9999, 'c' * c3, 'on'].join