import java.util.*;
public class Main {
	private static Scanner sc;
	public static void main(String[] args){
		sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if(a == (b + c)){
			System.out.println("Yes");
		}else if(b == (a + c)){
			System.out.println("Yes");
		}else if(c == (a + b)){
			System.out.println("Yes");
		}else{
			System.out.println("N0");
		}
	}
}
