#include <bits/stdc++.h>

using namespace std;

using i64 = long long;

void solve() {
    int n, m;
    cin >> n >> m;

    i64 ans = 0;
    for (int i = 2;i <= n;i += 2){
        ans += (m + 1) * (n - i + 1);
    }
    for (int i = 2;i <= m;i += 2){
        ans += (n + 1) * (m - i + 1);
    }

    int t = 0;
    for (int i = 2;i <= n && i <= m;i += 2){
        t += (m - i + 1) * (n - i + 1);
    }

    cout << ans + 2 * t << "\n";
} 

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int T = 1;
    // cin >> T;
    while (T--) {
        solve();
    }

    return 0;
}