#include<bits/stdc++.h>
using namespace std;
#define int long long
typedef pair<int,int> pii;
#define endl "\n"
const int N=2e5+5;
int a[N],b[N];
double eps=1e-6;
void solve()
{
    int x,y;
    cin>>x>>y;
    cout<<x*y*6<<endl;
}
signed main()
{ 
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t=1;
    //cin>>t;
    while(t--) solve();
    return 0;
}