n = int(input())
a = list(map(int,input().split()))
a.sort()
ans = 0
sum_max = sum(a)+1
dp = [[0] * (sum_max) for _ in range(n+1)]
dp[0][0] = 1
for i in range(1,n):
    max_ = a[i]
    ndp =  [[0] * (sum_max) for _ in range(n+1)]
    for j in range(i+1):
        for k in range(sum_max):
            ndp[j][k] += dp[j][k]
            if j > 0 and dp[j-1][k] > 0:
                ndp[j][k+a[i-1]] += dp[j-1][k]
            if (max_*j)-k <= max_:
                if j > 0 and (k+ max_) % j == 0:
                    ans += ndp[j][k]
    dp = ndp[::]
print(ans)