Submission #122303


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#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include<cassert>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
#include<bitset>

#define REP(i,b,n) for(int i=b;i<(int)n;i++)
#define rep(i,n)   REP(i,0,n)
#define ALL(C)     (C).begin(),(C).end()
#define FOR(it,o)  for(__typeof((o).begin()) it=(o).begin(); it!=(o).end(); ++it)
#define dbg(x) cout << __LINE__ << ' ' << #x << " = " << (x) << endl


typedef long long ll;

using namespace std;

//ハマったらチェックリスト見ろ!!

int main(){
  int n, k;
  while(cin >> n >> k){
    long double now = 0;
    vector<int> v(n);
    rep(i, n)cin >> v[i];
    sort(ALL(v));
    reverse(ALL(v));
    while((int)v.size() > k)v.pop_back();
    reverse(ALL(v));
    rep(i, v.size()){
      now = (now + (long double)v[i])/2.;
    }
    printf("%.9Lf\n", now);
  }
  return 0;
}

Submission Info

Submission Time
Task C - AtCoderプログラミング講座
User shioshiota
Language C++ (G++ 4.6.4)
Score 100
Code Size 1117 Byte
Status AC
Exec Time 23 ms
Memory 936 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 22 ms 804 KB
00_sample_02.txt AC 22 ms 928 KB
00_sample_03.txt AC 22 ms 796 KB
00_sample_04.txt AC 22 ms 928 KB
test_01.txt AC 22 ms 812 KB
test_02.txt AC 21 ms 804 KB
test_03.txt AC 23 ms 796 KB
test_04.txt AC 21 ms 800 KB
test_05.txt AC 22 ms 924 KB
test_06.txt AC 21 ms 804 KB
test_07.txt AC 22 ms 804 KB
test_08.txt AC 22 ms 936 KB
test_09.txt AC 21 ms 800 KB
test_10.txt AC 23 ms 804 KB
test_11.txt AC 22 ms 804 KB
test_12.txt AC 22 ms 928 KB
test_13.txt AC 20 ms 800 KB
test_14.txt AC 22 ms 920 KB
test_15.txt AC 20 ms 792 KB
test_16.txt AC 21 ms 804 KB
test_17.txt AC 21 ms 804 KB
test_18.txt AC 23 ms 796 KB
test_19.txt AC 23 ms 932 KB
test_20.txt AC 21 ms 740 KB
test_21.txt AC 22 ms 804 KB
test_22.txt AC 22 ms 804 KB
test_23.txt AC 22 ms 924 KB
test_24.txt AC 22 ms 804 KB
test_25.txt AC 22 ms 932 KB
test_26.txt AC 22 ms 796 KB
test_27.txt AC 22 ms 676 KB
test_28.txt AC 22 ms 808 KB
test_29.txt AC 21 ms 936 KB
test_30.txt AC 22 ms 800 KB