S = input()

dict = [
    "A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"
    ]

ans = ""
for i in range(len(S)):
    ans += dict[dict.index(S[i]) - i - 1]

print(ans)