from itertools import permutations

n = int(input())
s = input()
if n <= 3:
    ans = set()
    for i in permutations(s):
        ans.add(int(''.join(i)) % 120)
    print(len(ans))
    exit()
A = [0 for _ in range(10)]
for i in s:
    A[int(i)] += 1
ans = 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:
                ans.add((c * 100 + b * 10 + a) % 40)
            A[a] += 1
            A[b] += 1
            A[c] += 1
print(len(ans))