import java.util.Scanner;

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