#include <iostream>
#include <algorithm>
#include <map>
#include <cstring>
#include <string>
#include <vector>
#include <cctype>
#include <cmath>
#include <queue>
#include <set>
#include <functional>
#include <unordered_map>
using namespace std;
typedef long long LL;
typedef pair<LL, LL> PLL;
#define qwq ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define tcase      \
    LL t = read(); \
    while (t--)

LL read()
{
    LL sum = 0, fl = 1;
    int ch = getchar();
    for (; !isdigit(ch); ch = getchar())
        if (ch == '-')
            fl = -1;
    for (; isdigit(ch); ch = getchar())
        sum = sum * 10 + ch - '0';
    return sum * fl;
}

void solve()
{
    LL n = read(), m = read();
    printf("%lld\n", n * m * 6);
}

int main()
{

    solve();
    return 0;
}