#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1e6 + 7;
const int mod = 998244353;

void solve()
{
    int n,m;
    cin >> n >> m;
    ll ans = 1ll * n * m * 6ll;
    cout << ans << '\n';
}
int main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int _ = 1;
// cin >> _;
    while (_--)
        solve();
    return 0;
}