flag_index = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
flag=[]
encrypt_index = 'abcdefghiABCDEFGHIJKLMNjklmn0123456789opqrstuvwxyzOPQRSTUVWXYZ'
encflag = 'KanXueCTF2019JustForhappy'
for i in encflag:
flag.extend(flag_index[int(encrypt_index.find(i))])
for i in flag:
print(i, end='')