#include <fstream>
#define int long long

using namespace std;

ifstream cin ("paralelograme.in");
ofstream cout ("paralelograme.out");

int n, m;

int nrparalelograme_dreptunghi(int n, int m)
{
    ///pt paralele
    int numarn = (n *  (n + 1) * (2 * n + 4)) / 12;
    numarn *= 2;
    numarn -= (n * (n + 1)) / 2;
    int numarm = (m * (m + 1) * (2 * m + 4)) / 12;
    numarm *= 2;
    numarm -= (m * (m + 1)) / 2;
    return numarn + numarn - 1 + (n - 1) * (m - 1);
}

signed main()
{
    cin >> n >> m;
    return 0;
}