#!/usr/bin/python2

A = list(raw_input('Enter your input:\n'))
B = ''
C = len(A) - 1
while C > -1:
  B += A[C]
  C -= 2
D = 1
while D < len(A):
  B += A[D]
  D += 2
B = list(B)
for E in range(len(B)):
  F = E % 3
  if F == 0:
    A[E] = chr(ord(A[E]) ^ ord(B[E]))
  elif F == 1:
    B[E] = chr(ord(B[E]) + (ord(B[E - 1]) % 10))
  else:
    B[E] = chr(ord(B[E]) + 2)
    G = B[E]
    B[E] = B[E - 1]
    B[E - 1] = G

B = ''.join(B)
if B == "gplggetwz_unhuliwdtgzbpoil":
  print 'That is correct! Submit your input as the flag!'
else:
  print 'Nope! Try again!'