Submission #123254


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#include<iostream>
#include<algorithm>
#include<stdio.h>
using namespace std;

int main()
{
	int N, K;
	cin >> N >> K;
	
	int rate[N];
	for(int i = 0; i < N; i++){
		cin >> rate[i];
	}

	sort(rate, rate + N);

	double Trate = 0.0;
	for(int i = 0; i < K; i++){
		if(K == N)	Trate = (Trate + rate[i]) / 2.0;
		else	Trate = (Trate + rate[N - K + i]) / 2.0;
	}

	printf("%.6f\n", Trate);

	return 0;
}

Submission Info

Submission Time
Task C - AtCoderプログラミング講座
User kene
Language C++ (G++ 4.6.4)
Score 100
Code Size 425 Byte
Status AC
Exec Time 26 ms
Memory 932 KB

Judge Result

Set Name All
Score / Max Score 100 / 100
Status
AC × 34
Set Name Test Cases
All 00_sample_01.txt, 00_sample_02.txt, 00_sample_03.txt, 00_sample_04.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt
Case Name Status Exec Time Memory
00_sample_01.txt AC 25 ms 800 KB
00_sample_02.txt AC 21 ms 800 KB
00_sample_03.txt AC 20 ms 932 KB
00_sample_04.txt AC 21 ms 676 KB
test_01.txt AC 21 ms 928 KB
test_02.txt AC 25 ms 780 KB
test_03.txt AC 26 ms 800 KB
test_04.txt AC 24 ms 808 KB
test_05.txt AC 24 ms 804 KB
test_06.txt AC 22 ms 800 KB
test_07.txt AC 21 ms 676 KB
test_08.txt AC 22 ms 808 KB
test_09.txt AC 22 ms 804 KB
test_10.txt AC 22 ms 800 KB
test_11.txt AC 23 ms 804 KB
test_12.txt AC 23 ms 804 KB
test_13.txt AC 20 ms 752 KB
test_14.txt AC 23 ms 808 KB
test_15.txt AC 23 ms 804 KB
test_16.txt AC 20 ms 800 KB
test_17.txt AC 21 ms 928 KB
test_18.txt AC 21 ms 676 KB
test_19.txt AC 20 ms 752 KB
test_20.txt AC 20 ms 804 KB
test_21.txt AC 21 ms 800 KB
test_22.txt AC 21 ms 680 KB
test_23.txt AC 21 ms 680 KB
test_24.txt AC 21 ms 932 KB
test_25.txt AC 21 ms 800 KB
test_26.txt AC 23 ms 784 KB
test_27.txt AC 22 ms 808 KB
test_28.txt AC 21 ms 676 KB
test_29.txt AC 22 ms 808 KB
test_30.txt AC 19 ms 804 KB