Submission #1135322

#	Time	Username	Problem	Language	Result	Execution time	Memory
1135322		ramzialoulou	Let's Win the Election (JOI22_ho_t3)	C++20	5 / 100	7 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>> v;
  multiset<pair<int, int>> s;
  for (int i = 0; i < n; i++) {
    int a, b;
    cin >> a >> b;
    s.insert({a, b});
    v.emplace_back(b, a);
  }
  sort(v.begin(), v.end());
  double ans = 1e9;
  for (int i = 0; i <= k; i++) {
    multiset<pair<int, int>> se = s;
    double sum = 0;
    int l = 0, x = 0;
    while (l < n && x < i) {
      if (v[l].first != -1) {
        sum += v[l].first;
        se.erase(se.find({v[l].second, v[l].first}));
        x += 1;
      }
      l += 1;
    }
    int y = k - x;
    double res = 0;
    while (y--) {
      res += se.begin()->first;
      se.erase(se.begin());
    }
    sum += res / (x + 1);
    ans = min(ans, sum);
  }
  cout << fixed << setprecision(10) << ans << "\n";
  return 0;
}

• Subtask 1: 5 / 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