import java.util.Scanner;


public class Main {
	public static void main(String[] args){

		Scanner sc = new Scanner(System.in);

		String a = sc.next();
		String b = sc.next();

		sc.close();

		String ab = a + b;
		int value = Integer.parseInt(ab);

		String ans = "No";

		for(int i = 4; i <= Math.sqrt(value); i++){
			if(i*i == value){
				ans = "Yes";
				break;
			}
		}

		System.out.println(ans);
	}
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz