import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a, b;
		int ab;
		a = sc.next();
		b = sc.next();
		ab = Integer.parseInt(a + b);

		int i = 0;
		boolean flg = false;
		while(i * i <= ab) {
			if(i * i == ab) {
				flg = true;
				break;
			} else {
				flg = false;
			}

			i++;
		}

		System.out.print(flg == true ? "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