Submission #125854

---

Source Code Expand

// 2014/01/21 Tazoe

#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
	int N, K;
	cin >> N >> K;

	int R[100];
	for(int i=0; i<N; i++){
		cin >> R[i];
	}

	sort(R, R+N);

	double C = 0.0;

	for(int i=N-K; i<N; i++){
		C = (C+(double)R[i])/2.0;
	}

	cout.precision(9);
	cout << fixed << C << endl;

	return 0;
}

Submission Info

Judge Result