import java.util.*;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n;
		int a = sc.nextInt();
		int b = sc.nextInt();
		if(b>a){
			n = a;
			a = b;
			b = n;
		}
		int c = sc.nextInt();
		if(c>a){
			n = a;
			a = c;
			c = n;
		}
		if(a==(b+c)){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
}