s = input()
new = len(s)*'x'
print(new) s = input() s input() input new = len(s)*'x' new len(s)*'x' len(s) len s 'x' print(new) print new s = input() input() s new = len(s)*'x' len(s)*'x' new
s = input()
new = len(s)*'x'
print(new)