import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);

		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();

		int aa=b+c;
		int bb=a+c;
		int cc=a+b;


		if(a==aa) {
			System.out.println("Yes");

		}else if(b==bb) {
			System.out.println("Yes");

		}else if(c==cc) {
			System.out.println("Yes");

		}else {
			System.out.println("No");
		}

	}

}