import java.util.*;

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

    Scanner scanner = new Scanner(System.in);

    int a = scanner.nextInt();
    int b = scanner.nextInt();

    String result = String.valueOf(a) + String.valueOf(b);
    int resultInt = Integer.parseInt(result);
    double resultSqrt = Math.sqrt(resultInt) ;

    if(resultSqrt==Math.floor(resultSqrt)) {System.out.println("Yes");}
    else{System.out.println("No");}



    }
}
/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