import java.util.Scanner; public class mockccc182j1 {

public static void main(String[] args) {
    // TODO Auto-generated method stub

    Scanner sc=new Scanner(System.in);
    int a=sc.nextInt();
    sc.next();
    int b=sc.nextInt();
    sc.next();
    int c=sc.nextInt();
    if(a+b==c){
        System.out.println("True");
    }else{
        System.out.println("False");
    }
}

}