#include <bits/stdc++.h>
#define lowbit(x) (x & -x)
#define int long long
#define lc (p << 1)
#define rc (p << 1 | 1)
using namespace std;
typedef pair<int, int> PII;
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());
const int N = 2e5 + 5, M = 1e6 + 5, INF = 0x3f3f3f3f, mod = 998244353;

int T = 1, n, m;

void solve() {
	cin >> n >> m;
	cout << n * m * 6 << endl;
}
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	
//	cin >> T;
	while (T--) solve();
}