구름LEVEL_빙글빙글1(별2개)_답

N = int(input())
M = N

x = int(0)
y = int(0)

matrix = [[0] * 2 * N for _ in range(N)]

# print(matrix)

for i in range(N):
    if i % 4 == 0:
        if i == 0:
            for j in range(M):
                k = 2 * j
                matrix[x][y + k] = 1

            x = i % 4
            y = k

            M = M - 1

            x = i % 4
            y = k

        else:
            for j in range(1, M + 1):
                k = 2 * j
                matrix[x][y + k] = 1

            x = x
            y = y + 2 * M

            M = M - 2

    # print(f"{i} : {x}, {y}")

    elif i % 4 == 1:
        for j in range(1, M + 1):
            matrix[x + j][y] = 1

        x = x + M
        y = y


    # print(f"{i} : {x}, {y}")

    elif i % 4 == 2:
        for j in range(1, M + 1):
            o = 2 * j
            matrix[x][y - o] = 1

        x = x
        y = y - o

        M = M - 2


    # print(f"{i} : {x}, {y}")

    elif i % 4 == 3:
        for j in range(1, M + 1):
            o = j
            matrix[x - j][y] = 1

        x = x - M
        y = y

        M = M

    # print(f"{i} : {x}, {y}")

for i in range(N):
    for j in range(2 * N):
        if matrix[i][j] == 1:
            matrix[i][j] = '#'
        elif matrix[i][j] == 0:
            matrix[i][j] = ' '

for i in matrix:
    for j in i:
        print(j, end='')
    print()