#include <cstdio>
#include <vector>
#include <cstring>
#include <climits>
#include <iostream>
#include <algorithm>
using namespace std;
#define il inline
#define rr read()
#define wr puts()
#define bl putchar(' ')
#define in int
#define max(x, y) (x > y ? x : y)
#define min(x, y) (x < y ? x : y)
#define rep(i, l, n) for (in i = l; i >= n; i--)
#define int long long
il int read()
{
    char ch;
    bool f = 0;
    while ((ch = getchar()) < '0' || ch > '9')
        (ch == '-') && (f = 1);
    in x = ch ^ '0';
    while ((ch = getchar()) <= '9' && ch >= '0')
        x = (x << 1) + (x << 3) + (ch ^ '0');
    return f ? -x : x;
}

il void print(in x)
{
    if (x < 0)
        putchar('-'), x = -x;
    if (x >= 10)
        print(x / 10);
    putchar(x % 10 ^ '0');
}

const int MAXN = 4e6 + 100;

void solve(){
    int n, m;
    cin >> n >> m ;
    cout << (n * m) * 6 << "\n";
}

signed main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    std::cout.tie(nullptr);
    int t;
    t = 1;
    while (t--)
    {
        solve();
    }
    return 0;
}