
import java.util.Scanner;

class Main {

public static void main(String[] args){
String a,b;
String m;
Scanner sc = new Scanner(System.in);
a= sc.next();
b= sc.next();

a=a+b;
int c =Integer.parseInt(a);


m="No";
for(int i=1; i<=1000; i++){
if((c-(i*i))==0){
m="Yes";
break;
}
}
 System.out.println(m);
}
}

/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