#include <bits/stdc++.h>
using i64 = long long;

#define no return std::cout << "NO\n", void()
void solve() {
    int n, m;
    std::cin >> n >> m;
    
    std::cout << n * m * 6;
}

signed main() {
    std::cin.tie(nullptr)->sync_with_stdio(false);
    int _ = 1;
//    std::cin >> _;
    while (_ --) {
        solve();
    }
    return 0;
}