S = input().strip()
a = "x"*len(S)
print(a) S = input().strip() S input().strip() ().strip () input strip a = "x"*len(S) a "x"*len(S) "x" len(S) len S print(a) print a a = "x"*len(S) "x"*len(S) a S = input().strip() input().strip() S
S = input().strip()
a = "x"*len(S)
print(a)