题解 | #密码游戏#
密码游戏
https://www.nowcoder.com/practice/36641ab168664384aff798ba7ce34bc1
a = int(input())
b = []
for i in range(4):
b.append((a//(10**(3-i)))%10)
for j in range(4):
b[j] = (b[j]+3)%9
b[0],b[2] = b[2],b[0]
b[1],b[3] = b[3],b[1]
print(b[0],b[1],b[2],b[3],sep='')

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