import java.util.Scanner;
public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int m=sc.nextInt();
        long ans=(long)Math.pow(n, n+1)-(n-1)*m;
        System.out.println(ans);

    }

}
/**************************************************************
	Problem: 1851
	User: admin
	Language: Java
	Result: Accepted
	Time:3830 ms
	Memory:40416 kb
****************************************************************/