import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		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);
        }
     }
}