题解 | #简单密码#

import sys

map_before = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
map_after =  '22233344455566677778889999bcdefghijklmnopqrstuvwxyza'	#需要做转换的提前映射好

s = input()
s_map = []
for i in s:
    if i in map_before:
        s_map.append(map_after[map_before.index(i)])
    else:
        s_map.append(i)
print(''.join(s_map))