#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3")
#pragma GCC optimize("O2")
using namespace std;
#define int long long
#define ll long long
#define llu unsigned long long
#define endl "\n"

typedef pair<int, int> PII;

int dx[4] = {-1, 0, 1, 0}, dy[4] = {0, 1, 0, -1};
const long long inf = 1LL << 60;
const int mod = 998244353;
const int N = 1e6 + 7;

void solve()
{
	int n, m;
	cin >> n >> m;
	cout << n * m * 6 << endl;
}

signed main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout << fixed << setprecision(20);
	int T = 1;
	// cin >> T;
	while (T--)
		solve();
	return 0;
}