//Awwawa! Dis cold yis ratten buy tEMMIE!
#include <bits/stdc++.h>
#define ll long long
#define maxn 100005 /*rem*/
#define mod 998244353
#define db double
#define vi vector<int>
#define pb push_back
#define mp make_pair
#define pi pair<int, int>
#define fi first
#define se second

template <typename T> bool chkmax(T &x,T y){return x<y?x=y,true:false;}
template <typename T> bool chkmin(T &x,T y){return x>y?x=y,true:false;}

using namespace std;
ll ksm(ll a, ll b) {
   if (!b) return 1;
   ll ns = ksm(a, b >> 1);
   ns = ns * ns % mod;
   if (b & 1) ns = ns * a % mod;
   return ns;
}
ll sqr(ll a) {
    return a * a;
}
ll cal(ll len, ll s) {
    if (len >= s) {
        if (s == 0) return 1;
        return 4 * s;
    }
    else {
        if (2 * len < s) return 0;
        return 4 * (2 * len - s + 1);
    }
} 
ll l[4], k;
int main() {
    int t;
    cin >> t;
    while (t--) {
        cin >> l[0] >> l[1] >> l[2] >> l[3] >> k;
        ll res = 0;
        for (int i = 0; i < 1600005; i++) {
            ll cur = 0;
            for (int j = 1; j <= 4; j++) {
                if (i % j == 0) {
                    int d = i / j;
                    cur += cal(l[4 - j], d);
                    if (j != 4) cur -= cal(l[3 - j], d);
                }
            }
            ll ns = min(cur, k);
            k -= ns;
            res += i * ns;
            if (k == 0) break;
        }
        cout << res << endl;
    }
    return 0;
}