N = int(input("N:\t"))

if not N%2:
    exit()

Matrix = []

for X in range(N):
    Matrix.append([])
    for Y in range(N):
        Matrix[X].append(0)

T = 0
X = 0
while True:
    
    for Y in range(T, N-T):
        Matrix[Y][X] = 1
    
    T+=1
    X+=1

    if  T==int(N/2+0.5):
        break

for X in Matrix:
    S = ""
    for Y in X:
        S += (" " if not Y else "*")
    print(S)

while 1:0