// dzx
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long
const int N=1e5+5;
const int M=1e5+5,P=998244353,INF=1e18;
typedef pair<int,int> PII;
#define fi first
#define se second
int n,m;
void solve(){
	cin>>n>>m;
    cout<<n*m*6<<endl;
}
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);
    int _T=1;
    // cin>>_T;
    while(_T--)solve();
    return 0;
}