def main():

    n = int(input())
    A = list(map(int, input().split()))

    #A.sort(reverse=True)

    from collections import defaultdict
    dp = defaultdict(lambda: 0)
    def getindex(k, s, M):
        return (k<<36)+(s<<18)+M
    dp[getindex(0, 0, 0)] = 1
    for a in A:
        nx = defaultdict(lambda: 0)
        for p, v in dp.items():
            k = p>>36
            r = p-(k<<36)
            s = r>>18
            M = r-(s<<18)
            #if s < M*(k-1):
                #continue
            nx[getindex(k, s, M)] += v
            nx[getindex(k+1, s+a, max(M, a))] += v
        dp = nx
    #print(dp)
    ans = 0
    for p, v in dp.items():
        k = p>>36
        r = p-(k<<36)
        s = r>>18
        M = r-(s<<18)
        if k <= 1:
            continue
        if s%(k-1) == 0:
            x = s//(k-1)
            if x >= M:
                ans += v
    print(ans)

if __name__ == '__main__':
    main()