S = input()
S = list(S)
x = 'x'
for i in range(len(S)):
    S[i] = x
print("".join(S)) S = input() S input() input S = list(S) S list(S) list S x = 'x' x 'x' for i in range(len(S)):
    S[i] = x i range(len(S)) range len(S) len S S[i] = x S[i] S i x print("".join(S)) print "".join(S) "".join "" join S S = input() input() S x = 'x' 'x' x S = list(S) list(S) S
S = input()
S = list(S)
x = 'x'
for i in range(len(S)):
    S[i] = x
print("".join(S))