#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> PII;
#define int long long
const int mod = 998244353;
void add(int &x, int y) {
   x += y;
   x = (x % mod + mod) % mod;
}
int mul(int x, int y) {
   return 1ll * x * y % mod;
}
int qmi(int x, int y) {
   int res = 1;
   while (y) {
      if (y & 1) res = mul(res, x);
      x = mul(x, x);
      y >>= 1;
   }
   return res;
}
void solve() {
   int n, m;
   cin >> n >> m;
   cout << 6 * n * m << endl;
}
signed main() {
   ios::sync_with_stdio(false);
   cin.tie(0);
   cout.tie(0);
   int t = 1;
   // cin >> t;
   while (t--) {
      solve();
   }
}