题解 | #密码游戏#

x = int(input())
x1 = x//1000
x2 = x//100-x1*10
x3 = x//10- x//100*10
x4 = x%10
x11 = (x1+3)%9
x22 = (x2+3)%9
x33 = (x3+3)%9
x44 = (x4+3)%9
print(x33,x44,x11,x22,sep="")