#include <fstream>

using namespace std;
ifstream f("dreptunghiuri.in");
ofstream g("dreptunghiuri.out");
int Min,i,n,m;
long long s;

int main()
{f>>m>>n;
s=(m-1)*m*(n-1)*n/4;
if(n<=m)
    Min=n;
else
    Min=m;
    for(i=3;i<=Min;i++)
        if(i%2==0)
            s=s+(n-i+1)*(m-i+1)*(i-2)*2;
        else
            s=s+(n-i+1)*(m-i+1)*((i-2)*2-1);
g<<s;

    return 0;
}