fn main() {
    let n: usize = {
        let mut buf = String::new();
        std::io::stdin().read_line(&mut buf).unwrap();
        buf.trim_end().parse().unwrap()
    };

    let a: Vec<i64> = {
        let mut buf = String::new();
        std::io::stdin().read_line(&mut buf).unwrap();
        let iter = buf.split_whitespace();
        iter.map(|x| x.parse().unwrap()).collect()
    };

    let mut sum = 0;
    for i in (0..n).rev() {
        if (a[i] + sum) % (i as i64 + 1) == 0 {
            sum += (a[i] + sum) / (i as i64 + 1);
        } else {
            return println!("No");
        }
    }
    println!("Yes");
}