#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
#define int long long
#define ull unsigned long long
#define PII pair<int, int>
#define fi first
#define se second
#define inf 0x3f3f3f3f3f3f3f3f
const int N=2e5+10,mod=998244353,P=131;

void solve()
{
    int n,m;
    cin>>n>>m;
    cout<<n*m*6<<endl;
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int T=1;
    // cin>>T;
    while (T--)
        solve();
    return 0;
}