N = int(input())
A = list(map(int, input().split()))

A.sort()

n = 0
for i in range(N):
    if A[i] > 1:
        n += N-1-i
    else:
        cnt1 = A[i+1:].count(1)
        cnt2 = N-1-i-cnt1
        n += 2 * cnt1 + 3 * cnt2

print(n)