#include<bits/stdc++.h>
#define int long long
#define endl '\n'
#define ph push_back
#define pp pop_back
using namespace std;

int n,m;

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    cin>>n>>m;
    cout<<n*m*6ll<<endl;
    return 0;
}