#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD LL(1e9 + 7)
#define INF 1000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

int main() {
	int l[3];
	cin >> l[0] >> l[1] >> l[2];
	int c[3];
	cin >> c[0] >> c[1] >> c[2];
	int nl[3] = {};
	nl[0] = 2 * (l[0] + l[1]);
	nl[1] = 2 * (l[1] + l[2]);
	nl[2] = 2 * (l[2] + l[0]);
	sort(nl, nl + 3);
	sort(c, c + 3);
	int ans = nl[0] * c[2] + nl[1] * c[1] + nl[2] * c[0];
	cout << ans << endl;
	return 0;
}