import re



s = eval(input())

print((re.sub('[a-z]', 'x', s)))
print(('x' * len(eval(input()))))
import re

s = eval(input())
print((re.sub("[a-z]", "x", s)))

print(("x" * len(eval(input()))))

-import re - -s = eval(input()) -print((re.sub("[a-z]", "x", s))) +print(("x" * len(eval(input()))))