Submission #170237


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//include
//------------------------------------------
#include <iostream>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
using namespace std;

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n)  FOR(i,0,n)

//conversion
//------------------------------------------
inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

//debug
//-------------------------------------------
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

  int n,k;
  cin >> n >> k;
  int tmp;
  vector<int> r;
  float result = 0;
  REP(i,n) {
    cin >> tmp;
    r.push_back(tmp);
  }
  sort(r.begin(),r.end());
  FOR(i,n-k,n){
    result = (result + r[i]) * 0.5;
  }
  cout.precision(9);
  cout << fixed << result  << endl;

  return 0;
}

Submission Info

Submission Time
Task C - AtCoderプログラミング講座
User kikunantoka
Language C++ (G++ 4.6.4)
Score 100
Code Size 1448 Byte
Status AC
Exec Time 74 ms
Memory 1068 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 74 ms 1004 KB
00_sample_02.txt AC 27 ms 932 KB
00_sample_03.txt AC 26 ms 1000 KB
00_sample_04.txt AC 24 ms 928 KB
test_01.txt AC 26 ms 1044 KB
test_02.txt AC 37 ms 864 KB
test_03.txt AC 26 ms 1044 KB
test_04.txt AC 25 ms 996 KB
test_05.txt AC 24 ms 1048 KB
test_06.txt AC 40 ms 932 KB
test_07.txt AC 27 ms 1044 KB
test_08.txt AC 25 ms 1036 KB
test_09.txt AC 25 ms 968 KB
test_10.txt AC 28 ms 1068 KB
test_11.txt AC 26 ms 1044 KB
test_12.txt AC 27 ms 1044 KB
test_13.txt AC 28 ms 932 KB
test_14.txt AC 24 ms 1044 KB
test_15.txt AC 31 ms 1004 KB
test_16.txt AC 28 ms 940 KB
test_17.txt AC 29 ms 1000 KB
test_18.txt AC 27 ms 1000 KB
test_19.txt AC 27 ms 1052 KB
test_20.txt AC 25 ms 1048 KB
test_21.txt AC 28 ms 936 KB
test_22.txt AC 28 ms 996 KB
test_23.txt AC 25 ms 940 KB
test_24.txt AC 26 ms 996 KB
test_25.txt AC 25 ms 936 KB
test_26.txt AC 26 ms 976 KB
test_27.txt AC 25 ms 1044 KB
test_28.txt AC 26 ms 992 KB
test_29.txt AC 25 ms 936 KB
test_30.txt AC 26 ms 1052 KB