s=input()
s_count = len(s)

print("x"*s_count) s=input() s input() input s_count = len(s) s_count len(s) len s print("x"*s_count) print "x"*s_count "x" s_count s_count = len(s) len(s) s_count s=input() input() s
s=input()
s_count = len(s)

print("x"*s_count)