Submission #5805499

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Source Code Expand

#include <iostream>
#include <string>
#include <algorithm>
#include <cstdlib>
#include <cmath>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <numeric>
#include <iomanip>
#include <tuple>

using namespace std;

int main(){
   long long q,h,s,d,n;
   cin>>q>>h>>s>>d>>n;
   long long m=min({q*4,h*2,s});
   long long ans;
   if(m*2<=d)ans=m*n;
   else {
      if(n%2==0)ans=d*n/2;
      else ans=n/2*d+m;
   }
   cout<<ans<<endl;

}

   

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