#[allow(unused_imports)]
use proconio::{
    input,
    marker::{Bytes, Chars, Usize1},
};

const C: i64 = 100_000 * 30 + 10;

fn main() {
    input! {
        n: usize,
        a: [i64; n],
    }
    let mut res = n * (n + 1) / 2;
    for x in 1..=30 {
        let mut b = vec![0; n + 1];
        for i in 0..n {
            b[i + 1] = b[i] + (a[i] - x);
        }
        let mut cnt1 = vec![0; (C * 2) as usize];
        let mut cnt2 = vec![0; (C * 2) as usize];
        for i in 0..=n {
            if i > 0 {
                if a[i - 1] == x {
                    res -= cnt1[(b[i] + C) as usize];
                }
                res -= cnt2[(b[i] + C) as usize];
            }
            if i < n {
                if a[i] == x {
                    cnt2[(b[i] + C) as usize] += 1;
                } else {
                    cnt1[(b[i] + C) as usize] += 1;
                }
            }
        }
    }
    println!("{}", res + 1);
}