//infoarena
#include<cstdio>
#include<iostream>
using namespace std;
FILE *f=fopen("dreptunghiuri.in","r");
FILE *g=fopen("dreptunghiuri.out","w");
int n,m,l1,l2;
long s;
int main()
{
	fscanf(f,"%d %d",&m,&n);
	for(l1=1;l1<n;l1++)
		for(l2=1;l2<m;l2++)
		{
			s+=(n-l1)*(m-l2);//dreptunghiuri+patrate drepte
			if(l1+l2<min(m,n)) 
				if(l1!=l2) s+=2*(n-l1-l2)*(m-l1-l2);//dreptunghiuri oblice
				else s+=(n-l1-l2)*(m-l1-l2);//patrate oblice
		}
	fprintf(g,"%ld",s);
	return 0;
}