fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

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