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();
		if (a+b == c || b+c == a || c+a == b) {
			System.out.println("Yes");
		}
                else
		System.out.println("No");
	}
}
