import java.util.Scanner;
public class a加aa加aaa {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner n=  new Scanner(System.in);
        int a=n.nextInt();//数的个数
        int b=n.nextInt();//0~9
        System.out.print(data(a,b));
    }
    public static int data(int a,int b) {
        int k=0,sum=0;
        for(int i=0;i<a;i++) {
            k+=b;
            sum+=k;
            k*=10;
            }
        return sum;
        }
}