Submission #937796

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
937796	2024-03-04 13:17:21	Gromp15	Let's Win the Election (JOI22_ho_t3)	C++17	77 / 100	2544 ms	1864 KiB

Main

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#include <bits/stdc++.h>
#define ll long long
#define ar array
#define db double
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define rint(l, r) uniform_int_distribution<int>(l, r)(rng)
template<typename T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }
void test_case() {
  int n, k;
  cin >> n >> k;
  vector<ar<int, 2>> a(n);
  for (auto &x : a) cin >> x[0] >> x[1];
  if (n == k) {
    db ans = 1e18;
    int cnt = 0;
    for (int i = 0; i < n; i++) cnt += bool(~a[i][1]);
    sort(all(a), [&](const auto &A, const auto &B) { return A[1] < B[1]; });
    for (int i = 1; i <= min(cnt, k) + 1; i++) {
      // use i people in the end
      vector<db> dp(i+1, 1e18);
      dp[1] = 0;
      for (int j = 0; j < n; j++) {
        vector<db> dp2(i+1, 1e18);
        for (int l = 1; l <= i; l++) {
          if (~a[j][1] && l + 1 <= i) {
            ckmin(dp2[l+1], dp[l] + (db)a[j][1] / l);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 11 / 11
• Subtask 4: 12 / 12
• Subtask 5: 33 / 33
• Subtask 6: 11 / 11
• Subtask 7: 0 / 23