s = len(input())
ans = []
for i in range(s):
    ans.append("x")
print("".join(ans)) s = len(input()) s len(input()) len input() input ans = [] ans [] for i in range(s):
    ans.append("x") i range(s) range s ans.append("x") ans.append ans append "x" print("".join(ans)) print "".join(ans) "".join "" join ans s = len(input()) len(input()) s ans = [] [] ans
s = len(input())
ans = []
for i in range(s):
    ans.append("x")
print("".join(ans))