import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		StringBuilder sb = new StringBuilder();

		sb.append(sc.nextInt()).append(sc.nextInt());

		int inNum = Integer.valueOf(sb.toString());

		for(int i = 4; i < 400 ; i++) {
			if (inNum == i*i) {
				System.out.println("Yes");
				break;
			} else if(inNum < i*i){
				System.out.println("No");
				break;
			}
		}
	}

}

/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