Submission #4033143

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Source Code Expand

#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
using namespace std;

int main() {
  int n, k;
  cin >> n >> k;
  vector<int> r(n);
  int i;
  for (i = 0; i < n; i++) {
    cin >> r[i];
  }
  sort(r.begin(), r.end());
  double res = 0;
  for (i = n - k; i < n; i++) {
    res = (res + r[i]) / 2;
  }
  cout << setprecision(10) <<  res << endl;
  return 0;
}

Submission Info

Judge Result