Butterfly

n = int(input())

high = n - 2
length = 2 * n - 1
stars = int((length - 3) / 2)
dash = int((length - 3) / 2)
for i in range(1, high + 1):
    if i % 2 != 0:
        print("*" * stars, end="")
        print("\\", end="")
        print(" ", end="")
        print("/", end="")
        print("*" * stars)
    else:
        print("-" * dash, end="")
        print("\\", end="")
        print(" ", end="")
        print("/", end="")
        print("-" * dash)


print(" " * (n - 1) + "@")

for i in range(1, high + 1):
    if i % 2 != 0:
        print("*" * stars, end="")
        print("/", end="")
        print(" ", end="")
        print(chr(92), end="")
        print("*" * stars)
    else:
        print("-" * dash, end="")
        print("/", end="")
        print(" ", end="")
        print(chr(92), end="")
        print("-" * dash)