Submission #6260968

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <cmath>
#define int long long
using namespace std;

signed main() {
  int Q, H, S, D, N; cin >> Q >> H >> S >> D >> N;
  int ans = (N/2) * min({8*Q, 4*H, 2*S, D}) + (N%2) * min({4*Q, 2*H, S});
  std::cout << ans << std::endl;

  return 0;
}

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