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 n;
		if(b != 100) {
			if(b / 10 == 0) {
				n = a * 10 + b;
			}else {
				n = a * 100 + b;
			}
		}else {
			n = a * 1000 + b;
		}
		for(int i = 1; i * i <= n; i++) {
			if(i * i == n) {
				System.out.println("Yes");
				return;
			}
		}
		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