import math

N = int(input())
l = list(map(int, input().split()))
s = set(l)
l_count = []
l.sort()
old_l_i = 0
count = 0
ans = 0

def combi(n, r):
    return math.factorial(n) // (math.factorial(n - r) * math.factorial(r))

for l_i in l:
    if old_l_i == l_i:
        count += 1
    else:
        l_count.append(count)
        count = 1
    old_l_i = l_i

l_count.append(count)
l_count = l_count[1:]

s = 1
for l_i in l_count:
    s *= l_i
ans = combi(len(l_count), 3) * s

print(ans)