s = input()

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

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