#include<bits/stdc++.h>
using namespace std;
#define optimize() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define endl '\n'
#define ll long long int
void solve()
{
   ll n,m;
   cin >> n>>m;
   cout << (n*m)+(8+3) << endl;
}
int main()
{
    optimize();
    //int t;
    //cin >> t;
    //while(t--)
    //{
    
    solve();
    
   //}
   
 }