#include<bits/stdc++.h>
using namespace std;
#define int long long
#define INF 0x3f3f3f3f3f3f3f3f
#define pii pair<int,int>
#define fi first
#define se second
#define all(_a) _a.begin(), _a.end()
const int INFF = 0x3f3f3f3f3f3f3f3f;


void solve() {
    int n,m;
    cin>>n>>m;
    cout<<n*m*6<<endl;
}
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr), cout.tie(nullptr);
    cout << setiosflags(ios::fixed) << setprecision(15);
    int T;
    T=1;
    //cin>>T;
    while(T--)solve();
    return 0;
}