import java.util.*;
 
public class Main {
	public static void main (String[] args) {
		Scanner in = new Scanner(System.in);		
		String N = in.next();
        String M = in.next();
      
      	int nam = Integer.parseInt(N+M);
        double nam2 = Math.sqrt((double)nam);
      
        if(nam2%1==0){System.out.print("Yes");}
        else{System.out.print("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