import java.util.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner scan = new Scanner(System.in);
		double sum_1=0, sum_2=0;
		int n = scan.nextInt();
		int m = scan.nextInt();
		
		for(int k=1; k<=n; k++){
			for(int l=1; l<=m; l++)	sum_2+=(k-l)*(k-l);
			sum_1+=k*k*k*sum_2;
			sum_2-=sum_2;
		}
		
		System.out.print(sum_1);
	}
}