#include <bits/stdc++.h>
#define pb push_back
#define int long long
using namespace std;

const int mod = 998244353;
const int inf = 1e17;
const int N = 1e5+5;

int32_t main(){
    cin.tie(0); cout.tie(0);
    ios_base::sync_with_stdio(false);
    int n, m;
    cin>>n>>m;
    int ans = 0;
    for(int l = 1; l <= min(n, m); l++){
        ans += (n - l + 1) * (m - l + 1);
    }

    cout<<ans<<endl;
    return 0;
}