#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;

int main(){
    vector<int> l(3);
    rep(i,3) cin >> l[i];
    sort(l.begin(),l.end());
    int r,b,y;
    cin >> r >> b >> y;
    vector<int> other(3);
    other[0] = 2*(r+b);
    other[1] = 2*(r+y);
    other[2] = 2*(b+y);
    sort(other.begin(),other.end(),greater<int>());
    int ans = 0;
    rep(i,3) ans += other[i] * l[i];
    cout << ans << endl;
    return 0;
}