use proconio::input;
fn main() {
    input! {
        n: usize,
        a: [usize; n],
    }
    for i in 0..n {
        if a[i] + a[n-i-1] != a[0] + a[n-1] {
            println!("No");
            return;
        }
    }
    println!("Yes");
}