import java.util.Scanner;
public class Main {

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

}