import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    
    public static BigInteger getSqrt(String A) {
        String sqrt = "0";
        String pre = "0";
        BigInteger twenty = new BigInteger("20");
        BigInteger temp1 = BigInteger.ZERO;
        BigInteger temp2 = BigInteger.ZERO;
        int len = A.length();
        if(len % 2 == 1) {
            A = "0" + A;
            len = len + 1;
        }
        for(int i = 0;i < len / 2;i++) {
            BigInteger tempN = new BigInteger(pre + A.substring(i*2, i*2 + 2));
            for(int j = 0;j <= 9;j++) {
                BigInteger tempJ = new BigInteger(j+"");
                temp1 = twenty.multiply(new BigInteger(sqrt)).add(tempJ).multiply(tempJ);
                tempJ = tempJ.add(BigInteger.ONE);
                temp2 = twenty.multiply(new BigInteger(sqrt)).add(tempJ).multiply(tempJ);    
                if(temp1.compareTo(tempN) <= 0 && temp2.compareTo(tempN) > 0) {
                    sqrt = sqrt + j;
                    pre = tempN.subtract(temp1).toString();
                    break;
                }
            }
        }
        return new BigInteger(sqrt);
    }
    
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String n = in.next();
        String m = in.next();
        BigInteger result = getSqrt(n).multiply(getSqrt(m));
        System.out.println(result);
    }
}