S = input().strip()
N = len(S)
print(*["x"]*N, sep="") S = input().strip() S input().strip() ().strip () input strip N = len(S) N len(S) len S print(*["x"]*N, sep="") print *["x"]*N ["x"]*N ["x"] "x" N sep="" sep "" S = input().strip() input().strip() S N = len(S) len(S) N
S = input().strip()
N = len(S)
print(*["x"]*N, sep="")