import java.util.*;
import java.lang.*;

class Main {
    
    public static void main(String[] areg) {
        Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
        
        int num = 0;
        if (b < 10)
            num = a * 10 + b;
        if (b >= 10 && b < 100)
            num = a * 100 + b;
        if (b == 100)
            num = a * 1000 + b;
        
        double sqrt = Math.sqrt(num);
        
        System.out.println((sqrt - Math.floor(sqrt) == 0) ? "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