Submission #1540549

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Source Code Expand

#include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long
#define mod 1000000007

using namespace std;

ll a, b, c, d, n;

int main() {
    cin >> a >> b >> c >> d;
    cin >> n;
    a *= 4, b *= 2;
    if (n % 2 == 0)
        cout << min(n * a, min(n * b, min(n * c, n / 2 * d))) << endl;
    else
        cout << min(n * a, min(n * b, min(n * c, n / 2 * d + min(a, min(b, c))))) << endl;

	return 0;
}

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