s= input()
x = "x" * len(s)
print(x) s= input() s input() input x = "x" * len(s) x "x" * len(s) "x" len(s) len s print(x) print x x = "x" * len(s) "x" * len(s) x s= input() input() s
s= input()
x = "x" * len(s)
print(x)