Submission #1539533

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cstring>
#include<vector>
#include<algorithm>
#define N 605
#define LL long long
using namespace std;

int main()
{
	LL q,h,s,d,n;
	while(~scanf("%lld%lld%lld%lld%lld",&q,&h,&s,&d,&n))
	{
		LL x,y;
		x=q*4;
		y=q*8;
		x=min(x,h*2);
		y=min(y,h*4);
		x=min(x,s);
		y=min(y,s*2);
		y=min(y,d);
		printf("%lld\n",n/2*y+(n&1)*x);
	}
}

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