import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int x, y = 0;
		if (b != 100) {
			if (b / 10 == 0) {
				x = a * 10 + b;
			} else {
				x = a * 100 + b;
			}
		} else {
			x = a * 1000 + b;
		}
		for (int i = 0; i * i <= x; i++) {
			if (i * i == x) {
				System.out.println("Yes");
				y = 1;
				break;
			}
		}
		if (y == 0) {
			System.out.println("No");
		}
		sc.close();

	}

}
/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