s = input()
A="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
B="22233344455566677778889999bcdefghijklmnopqrstuvwxyza0123456789"
zd = dict(zip(A,B))
for i in s:
    print(zd[i],end='')

直接设置成字典就可以了