import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws IOException {
		Scanner scanner = new Scanner(System.in);
		int[] a = new int[3];
		for(int i = 0; i < 3; i++){
			a[i] = scanner.nextInt();
		}

		Arrays.sort(a);

		if(a[2] - a[0] == a[1]){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
}
