Submission #339093

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Source Code Expand

#include<iostream>
#include<stdio.h>
#include<algorithm>
using namespace std;
#define rep(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
int main(void){
	int N, K;
	cin >> N >> K;
	int rate[100];
	rep(i, 0, N)
		cin >> rate[i];
	sort(rate, rate + N);
	double sum = 0;
	rep(i, N - K, N){
		sum = (sum + rate[i]) / 2.0;
	}
	printf("%.5f\n", sum);
	return(0);
}

Submission Info

Judge Result