#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int maxn= 1e6+5;
void solve()
{
    ll n,m;cin>>n>>m;
    cout<<n*m*6<<'\n';
}
int main()
{
    ios::sync_with_stdio(0), cin.tie(00) ;
    int t=1;
    // cin>>t;
    while(t--)
    {
        solve();
    }
}