(lambda w:(lambda n,f:[w("%s "%i)for i in range(n)]and w("\n")or[f((i+x)%2 for x in range(n-1))for i in range(n)]and f([0]*(n-1))or[w("%s "%i)for i in reversed(range(n))]and w("\n"))(input("n=? >>>"),lambda b:w("|"+"|".join(" _"[c]for c in b)+"|"+"\n")))(__import__("sys").stdout.write)