M=int(input())
d=[0]*20001
for i in range(20000):
  t=20000-i
  if M>=t*(1+t)//2:
    d[t]=M//(t*(1+t)//2)
    M-=d[t]*(t*(1+t)//2)
d[0]=M
ans='n'*M
for i in range(20000):
  ans+='co'+'n'*d[i+1]
print(ans)