#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define mt make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    vll l(3), rby(3);
    while(cin >> l[0] >> l[1] >> l[2] >> rby[0] >> rby[1] >> rby[2]) {
        sort(all(rby));
        ll ans = LLONG_MAX;
        do {
            ll x = 0;
            rep(i, 3)x += (l[0] + l[1] + l[2] - l[i]) * 2 * rby[i];
            smin(ans, x);
        } while(next_permutation(all(rby)));
        cout << ans << endl;
    }
}