from collections import Counter
mod = 10 ** 9 + 7
N = int(input())
A = list(map(int, input().split()))
counter = Counter(A)
ans = N * (N - 1) * (N - 2) // 6
for v in counter.values():
    ans -= v * (v - 1) // 2 * (N - v) + v * (v - 1) * (v - 2) // 6
    ans %= mod
print(ans)