import java.util.Scanner;

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

    	int a = sc.nextInt(),
    		b = sc.nextInt(),
    		c = sc.nextInt();
    	
    	if((a + b) == c || (b + c) == a || (c + a) == b)	System.out.println("Yes");
    	else												System.out.println("No");
    }
}