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();
		scan.close();
		if(a>b&&a>c &&a==b+c||b>a&&b>c&&b==a+c||c>a&&c>a&&c==a+b)System.out.println("YES");
		else System.out.println("NO");
	}
}