#include <bits/stdc++.h>

using namespace std;
ifstream f("dreptunghiuri.in");
ofstream g("dreptunghiuri.out");
long long n,m,sum,sus,jos,infata,i,j;
int main()
{
    f>>n>>m;
    sum=(n*(n-1))/2*(m*(m-1))/2;
    for (i=1;i<=n;i++)
    {
        for (j=1;j<=m;j++)
        {
            sus=min(i-1,m-j);
            jos=min(n-i,m-j);
            infata=(m-j)/2;
            sum=sum+min(sus,min(jos,infata));
        }
    }
    g<<sum;
    return 0;
}