import java.util.*;

public class Main {
	  public static void main(String args[]){
      	Scanner scan = new Scanner(System.in);
            
        String a = scan.next();
        String b = scan.next();
        String a_b = a + b;
        
        String cnt;
        
        int num = Integer.parseInt( a_b );
        
        int num_root = (int)Math.sqrt((double)num);
        
        //System.out.println(num_root);
        
        if( num_root * num_root == num )
          cnt = "Yes";
        else
          cnt = "No";
        
        System.out.println(cnt);
	  }
}
/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