#include <bits/stdc++.h>
using namespace std;
// #define int long long
#define ll long long
#define endl '\n'
#define all(a) a.begin(), a.end()
#define pb push_back
#define x first
#define y second
#define debug(_x) cout << #_x << '=' << _x << endl
typedef pair<int, int> PII;
using i64 = long long;
const int mod = 1e9 + 7;
const int N = 2e5 + 10;

ll a[N];

int b[N], c[N];

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

    cout << n * m * 6 << endl;
}

int main()
{
    /*ios::sync_with_stdio(false);
    cin.tie(nullptr);*/
    int _ = 1;
    // cin >> _;

    while (_--)
        solve();

    return 0;
}