S = input()

# S のすべての文字を x で置き換えて出力せよ。

answer = ''
for i in range(len(S)):
  answer += 'x'
print(answer) S = input() S input() input answer = '' answer '' for i in range(len(S)):
  answer += 'x' i range(len(S)) range len(S) len S answer += 'x' answer 'x' print(answer) print answer S = input() input() S answer = '' '' answer answer += 'x' 'x' answer
S = input()

# S のすべての文字を x で置き換えて出力せよ。

answer = ''
for i in range(len(S)):
  answer += 'x'
print(answer)