def main():
    n = int(input())
    p = list(map(int, input().split()))

    bit = [0] * (n+1)
    def get(x):
        res = 0
        while x > 0:
            res = res + bit[x]
            x = x - (x&-x)
        return res
        
    def add(x, y):
        if(x == 0):
            return
        while x <= n:
            bit[x] = bit[x] + y
            x = x + (x&-x)
            
            
    
    ans = 1
    a = 1
    for i in range(1, n+1):
        v = p[n-i]
        t = a * get(v)
        ans= t + ans
        add(v, 1)
        a = a * i

    print(ans)
    
main()