import sys
from collections import defaultdict

def main():
    N, *rest = list(map(int, sys.stdin.read().split()))
    A = rest[:N]

    max_m = N
    DP = [defaultdict(int) for _ in range(max_m + 1)]
    DP[0][(0, 0)] = 1

    for a in A:
        for m in range(max_m, -1, -1):
            if m > N:
                continue
            current = DP[m]
            for (s, mx), cnt in list(current.items()):
                new_m = m + 1
                if new_m > max_m:
                    continue
                new_s = s + a
                new_mx = max(mx, a)
                DP[new_m][(new_s, new_mx)] += cnt

    ans = 0
    for m in range(2, max_m + 1):
        current = DP[m]
        for (s, mx), cnt in current.items():
            if (m - 1) == 0:
                continue
            if s % (m - 1) != 0:
                continue
            S = s // (m - 1)
            if mx > S:
                continue
            ans += cnt

    print(ans)

if __name__ == "__main__":
    main()