s = input()

a = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
a_list = list(a)

s_list= list(s)
encryption = []

for i in range(len(s_list)):
    for j in range(len(a_list)):
        if s_list[i] == a_list[j]:
            encryption.append(a_list[j - (i + 1)])

print(encryption)