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){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
}