import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner scan =new Scanner(System.in);
        String a = scan.next();
        String b = scan.next();
        
        int c = Integer.parseInt(a + b);
        for(int i = 0; i <1000;i++){
            if ((i*i) == c){
                System.out.println("Yes");
                return;
            }
            
        }
        
        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