s = list(input())
count = len(s)
for i in range(count):
  s[i] = "x"
changed = "".join(s)
print(changed) s = list(input()) s list(input()) list input() input count = len(s) count len(s) len s for i in range(count):
  s[i] = "x" i range(count) range count s[i] = "x" s[i] s i "x" changed = "".join(s) changed "".join(s) "".join "" join s print(changed) print changed s = list(input()) list(input()) s changed = "".join(s) "".join(s) changed count = len(s) len(s) count
s = list(input())
count = len(s)
for i in range(count):
  s[i] = "x"
changed = "".join(s)
print(changed)