import java.util.Scanner;
 
public class Main {
    public static void main(String args[]){
        Scanner scn = new Scanner(System.in);
        double d = Math.sqrt(Integer.parseInt(scn.next() + scn.next()));
        System.out.println((int)d == d ? "Yes" : "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