import java.util.Scanner;
import java.lang.Math;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double a = sc.nextDouble();
        double b = sc.nextDouble();
        double c;
        if (b < 10) {
            c = a*10+b;
        } else if (b < 100) {
            c = a*100+b;
        } else {
            c = a*1000+b;
        }
        double d = Math.sqrt(c);
        if (Math.floor(d) < d) {
            System.out.println("No");
        } else {
            System.out.println("Yes");
        }
    }
}
/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