填空如下函数，该函数求1!+3!+5!+....+n!

def demo(n):
    if n==_____(1)_______:
        print('n=1,s=1')
    else:
        aList=[]
        for i in range(1,n+1,2):
            s=1
            for j in range(1,_____(2)_______):
                s*=j
            aList.append(_____(3)________)
        print('n={},s={}'.format(n,______(4)________))
n=eval(input())
demo(n)

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