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)