题解 | X形图案

while True:
    try:
        n = int(input())
        for i in range(1,n+1):
            for j in range(1,n+1):
                if j == i or j == (n+1-i):
                    print('*',end='')
                else:
                    print(' ',end='')
            print()
    except EOFError:
        break