#![allow(non_snake_case)]
#![allow(unused_imports)]
//use itertools::Itertools;
//use proconio::input;
//use proconio::marker::*;
use std::cmp::Reverse;
use std::collections::*;

fn main() {
    input! {
        n:usize,
        k:i64,
        a:[i64;n],
    }

    let mut a = a;
    let ans = a.contains(&k) || solve(n, &mut a, k);

    println!("{}", if ans { "Yes" } else { "No" });
}

fn solve(n: usize, a: &mut Vec<i64>, k: i64) -> bool {
    if n == 1 {
        return false;
    }
    for i in 0..n {
        for j in i + 1..n {
            if a[i] - a[j] == k || a[j] - a[i] == k {
                return true;
            }
            let ai = a[i];
            let aj = a[j];
            for i in 0..2 {
                if i == 0 {
                    a.push(ai - aj);
                } else {
                    a.push(aj - ai);
                }

                a.remove(i);
                a.remove(j - 1);
                if solve(n - 1, a, k) {
                    return true;
                }
                a.insert(i, ai);
                a.insert(j, aj);
                a.remove(n - 2);
            }
        }
    }

    false
}

mod input {
    #[macro_export]
    macro_rules! input {
        (source = $s:expr, $($r:tt)*) => {
            let mut iter = $s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
        ($($r:tt)*) => {
            let s = {
                use std::io::Read;
                let mut s = String::new();
                std::io::stdin().read_to_string(&mut s).unwrap();
                s
            };
            let mut iter = s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
    }

    #[macro_export]
    macro_rules! input_inner {
        ($iter:expr) => {};
        ($iter:expr, ) => {};

        ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
            let $var = read_value!($iter, $t);
            input_inner!{$iter $($r)*}
        };
    }

    #[macro_export]
    macro_rules! read_value {
        ($iter:expr, ( $($t:tt),* )) => {
            ( $(read_value!($iter, $t)),* )
        };

        ($iter:expr, [ $t:tt ; $len:expr ]) => {
            (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
        };

        ($iter:expr, chars) => {
            read_value!($iter, String).chars().collect::<Vec<char>>()
        };

        ($iter:expr, usize1) => {
            read_value!($iter, usize) - 1
        };

        ($iter:expr, $t:ty) => {
            $iter.next().unwrap().parse::<$t>().expect("Parse error")
        };
    }
}