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