Submission #1693111

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
#define CLR(mat) memset(mat, -1, sizeof(mat))
typedef long long ll;
 
 
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	ll n,k;
	double r[100];
	cin >> n >> k;
	FOR(i,0,n){
		double a;
		cin >>a;
		r[i]=a;
	}

	sort(r,r+n);
	double ans=0;
	FOR(i,n-k,n){
		ans = (ans+r[i])/2.0;
	}
	printf("%.7lf\n", ans);
	return 0;
}

Submission Info

Judge Result