Submission #1135328

#	Time	Username	Problem	Language	Result	Execution time	Memory
1135328		ramzialoulou	Let's Win the Election (JOI22_ho_t3)	C++20	0 / 100	2596 ms	328 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#ifdef Ramzi
#include "debug.h"
#else
#define debug(...)
#endif

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n, k;
  cin >> n >> k;
  vector<pair<int, int>> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i].first >> a[i].second;
  }
  double ans = 1e9;
  for (int i = 0; i < (1 << n); i++) {
    double sum = 0;
    int x = 0;
    multiset<pair<int, int>> s(a.begin(), a.end());
    for (int j = 0; j < n; j++) {
      if (i & (1 << j) && x < k) {
        if (a[j].second != -1) {
          x += 1;
          sum += a[j].second;
          s.erase(s.find(a[j]));
        }
      }
    }
    debug(sum, x);
    int y = k - x;
    double res = 0;
    while (y--) {
      res += s.begin()->first;
      s.erase(s.begin());
    }
    sum += res / (x + 1);
    ans = min(ans, sum);
  }
  cout << fixed << setprecision(10) << ans << "\n";
  return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 33
• Subtask 6: 0 / 11
• Subtask 7: 0 / 23