import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	String s = sc.next();
      	String t = sc.next();
      	int st = Integer.parseInt(s + t);
      	String ans = "No";
      	for(int i = 1; i <= 400; i++){
        	if(st == i*i){
            	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