import java.util.Scanner;
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 && B==C && C==A) {

			System.out.println("Yes");

		}else {

			System.out.println("No");
		}
	}

}
