//package abc047a;

import java.util.*;
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int a, b, c;
		
		Scanner sc = new Scanner(System.in);
		a= sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();
		if((a + b == c) ||(a + c == b) || (b + c == a))
			System.out.println("Yes");
		else
			System.out.println("No");



	}

}
