import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int c = Integer.parseInt(a+b);
		boolean heihoukon = false;
		for(int i = 0;i<317;i++) {
			if(i*i == c) {
				heihoukon = true;
			}
		}
		if(heihoukon == true) {
			System.out.println("Yes");
		}else if(heihoukon == false) {
			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