from itertools import permutations
N = int(input())
S = input()
if N <= 3:
	s = set()
	for i in permutations(S):
		s.add(int(''.join(i)) % 120)
	exit(print(len(s)))
A = [0] * 10
for i in S:
	A[int(i)] += 1
s = set()
for a in range(1, 10):
	for b in range(1, 10):
		for c in range(1, 10):
			A[a] -= 1
			A[b] -= 1
			A[c] -= 1
			if A[a] >= 0 and A[b] >= 0 and A[c] >= 0:
				s.add((c * 100 + b * 10 + a) % 40)
			A[a] += 1
			A[b] += 1
			A[c] += 1
print(len(s))