import java.util.*;

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