Submission #6606482

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Source Code Expand

// luogu-judger-enable-o2
#include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int main(){
	long long int n,k;
	cin>>n>>k;
	long long int a[10086];
	for(int i=0;i<n;i++){
		cin>>a[i];
	}
	sort(a,a+n);
	double c=0;
	for(int i=n-k;i<n;i++){
		c=(a[i]+c)/double(2);
	}
	printf("%.10lf\n",c);
	return 0;
}

Submission Info

Judge Result