#include <bits/stdc++.h>

#define DEBUG
#ifdef DEBUG
#define debug(x) cerr << #x << ": " << (x) << endl
#define print(x) cerr << x << ' '
#define println(x) cerr << x << endl
#else
#define debug(x)
#define print(x)
#define println(x)
#endif
#define x first
#define y second
#define el '\n'
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int N = 3e5 + 10, INF = 0x3f3f3f3f, mod = 998244353;

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

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    int tcase = 1;
    // cin >> tcase;
    while (tcase--) solve();
}