#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll> PII;
#define endl '\n'
const int N=1e6+10;
const int mod=1e9+7;
const double eps=1e-9;
ll a[N];
void solve()
{
	ll n,m;
	cin>>n>>m;
	cout<<n*m*6ll<<endl;
	return;	
}
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int _=1;
	//cin>>_;
	while(_--)
	{
		solve();	
	}	
	return 0;
}