import sys

a = input()
n1 = str((int(a[2]) + 3)%9)
n2 = str((int(a[3]) + 3)%9)
n3 = str((int(a[0]) + 3)%9) 
n4 = str((int(a[1]) + 3)%9)
print(n1+n2+n3+n4)