def main():
    # 入力
    n = int(raw_input())
    a = list(map(int, raw_input().split()))

    assert 1 <= n <= 150000
    minA = min(a)
    maxA = max(a)
    assert 1 <= minA <= 100 and maxA <= 100

    # raの初期化
    ra = [0] * (n + 1)
    ans = n * (n + 1) // 2

    for x in range(minA, maxA + 1):
        ra[0] = 0
        for i in range(n):
            ra[i + 1] = ra[i] + a[i] - x

        # 隣接重複を削除
        rb = [ra[0]]
        for i in range(1, len(ra)):
            if ra[i] != ra[i - 1]:
                rb.append(ra[i])

        # raをソート
        ra.sort()
        
        # rbをソート
        rb.sort()

        # raに基づいてカウント
        cnt = 0
        for i in range(n + 1):
            if i > 0 and ra[i] != ra[i - 1]:
                ans -= cnt * (cnt - 1) // 2
                cnt = 0
            cnt += 1
        ans -= cnt * (cnt - 1) // 2

        # rbに基づいてカウント
        cnt = 0
        for i in range(len(rb)):
            if i > 0 and rb[i] != rb[i - 1]:
                ans += cnt * (cnt - 1) // 2
                cnt = 0
            cnt += 1
        ans += cnt * (cnt - 1) // 2

    ans += 1  # 初期状態の分を足す

    print(ans)


if __name__ == "__main__":
    main()