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