# Vicfred
# https://atcoder.jp/contests/abc154/tasks/abc154_b
# simulation
s = input()

answer = 'x'*len(s)

print(answer)
 s = input() s input() input answer = 'x'*len(s) answer 'x'*len(s) 'x' len(s) len s print(answer) print answer s = input() input() s answer = 'x'*len(s) 'x'*len(s) answer
# Vicfred
# https://atcoder.jp/contests/abc154/tasks/abc154_b
# simulation
s = input()

answer = 'x'*len(s)

print(answer)

