import sys

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def MI1(): return map(int1, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    itoc="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    ctoi={c:i for i,c in enumerate(itoc)}
    s=input()
    ans=""
    for j,c in enumerate(s):
        ans+=itoc[ctoi[c]-j-1]
    print(ans)

main()