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