oj.uz

Submission #397112

# Submission time Handle Problem Language Result Execution time Memory
397112 2021-05-01T13:08:57 Z fedoseevtimofey Worst Reporter 4 (JOI21_worst_reporter4) C++14
14 / 100
 2000 ms 88304 KB 
#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <algorithm>
#include <random>
#include <iomanip>
#include <functional>
#include <cassert>
#include <bitset>
#include <chrono>
 
using namespace std;
 
typedef long long ll;
 
int main() {
  ios_base::sync_with_stdio(false); cin.tie(0);
#ifdef LOCAL
  freopen("input.txt", "r", stdin);
#endif
  int n;
  cin >> n;
  vector <int> a(n), h(n), c(n);
  vector <vector <int>> g(n);
  for (int i = 0; i < n; ++i) {
    cin >> a[i] >> h[i] >> c[i];
    --a[i];
    if (a[i] != i) {
      g[a[i]].push_back(i);
    }
  }
  vector <map <int, ll>> dp(n);
  auto dfs = [&] (int u, int p, auto&& dfs) -> void {
    for (auto v : g[u]) {
      if (v != p) {
        dfs(v, u, dfs);
        if (dp[v].size() > dp[u].size()) swap(dp[u], dp[v]);
        for (auto p : dp[v]) dp[u][p.first] += p.second;
      }
    }
    /*ll extra = 0;
    for (auto p : dp[u]) {
      if (p.first <= h[u]) {
        extra += p.second;
      } else {
        break;
      }
    }
    if (extra > c[u]) {
      dp[u][1] += c[u];
      dp[u][h[u]] -= c[u];
      dp[u][h[u] + 1] += c[u];
    } else {
      while (!dp[u].empty() && dp[u].begin()->first <= h[u]) {
        dp[u].erase(dp[u].begin());
      }
      dp[u][1] += extra;
      dp[u][h[u] + 1] += c[u];
    }*/
    dp[u][1] += c[u];
    dp[u][h[u]] -= c[u];
    dp[u][h[u] + 1] += c[u];
    vector <pair <int, ll>> cur = vector <pair <int, ll>> (dp[u].begin(), dp[u].end());
    for (int i = 1; i < (int)cur.size(); ++i) cur[i].second += cur[i - 1].second;
    for (int i = (int)cur.size() - 2; i >= 0; --i) cur[i].second = min(cur[i].second, cur[i + 1].second);
    dp[u].clear();
    for (int i = 0; i < (int)cur.size(); ++i) {
      if (i == 0 || cur[i].second != cur[i - 1].second) dp[u][cur[i].first] += cur[i].second - (i == 0 ? 0 : cur[i - 1].second); 
    }
    /*cout << "start " << u + 1 << endl;
    for (auto p : dp[u]) {
      cout << p.first << ' ' << p.second << '\n';
    }
    cout << "finish\n";*/
  };
  dfs(0, -1, dfs);
  //cout << dp[0].begin()->second << '\n';
  ll ans = 2e18;
  ll sum = 0;
  for (auto p : dp[0]) {
    sum += p.second;
    ans = min(ans, sum);
  }
  cout << ans << '\n';
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 11 ms 1996 KB Output is correct
6 Correct 8 ms 1612 KB Output is correct
7 Correct 6 ms 1356 KB Output is correct
8 Correct 11 ms 2124 KB Output is correct
9 Correct 8 ms 1612 KB Output is correct
10 Correct 6 ms 1356 KB Output is correct
11 Correct 5 ms 1228 KB Output is correct
12 Correct 65 ms 1836 KB Output is correct
13 Correct 8 ms 1740 KB Output is correct
14 Correct 46 ms 1456 KB Output is correct
15 Correct 28 ms 1356 KB Output is correct
16 Correct 13 ms 2508 KB Output is correct
17 Correct 8 ms 1820 KB Output is correct
18 Correct 5 ms 1228 KB Output is correct
19 Correct 449 ms 1812 KB Output is correct
20 Correct 34 ms 1648 KB Output is correct
21 Correct 5 ms 1612 KB Output is correct
22 Correct 7 ms 1868 KB Output is correct
23 Correct 5 ms 1484 KB Output is correct
24 Correct 895 ms 1864 KB Output is correct
25 Correct 27 ms 1612 KB Output is correct
26 Correct 5 ms 1736 KB Output is correct
27 Correct 267 ms 1876 KB Output is correct
28 Correct 539 ms 1904 KB Output is correct
29 Correct 971 ms 2096 KB Output is correct
30 Correct 745 ms 1872 KB Output is correct
31 Correct 713 ms 2184 KB Output is correct

Subtask #2
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 1948 KB Output is correct
2 Correct 643 ms 88304 KB Output is correct
3 Correct 453 ms 60872 KB Output is correct
4 Correct 654 ms 85140 KB Output is correct
5 Correct 424 ms 60996 KB Output is correct
6 Correct 251 ms 41888 KB Output is correct
7 Correct 242 ms 37340 KB Output is correct
8 Execution timed out 2086 ms 59552 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 11 ms 1996 KB Output is correct
6 Correct 8 ms 1612 KB Output is correct
7 Correct 6 ms 1356 KB Output is correct
8 Correct 11 ms 2124 KB Output is correct
9 Correct 8 ms 1612 KB Output is correct
10 Correct 6 ms 1356 KB Output is correct
11 Correct 5 ms 1228 KB Output is correct
12 Correct 65 ms 1836 KB Output is correct
13 Correct 8 ms 1740 KB Output is correct
14 Correct 46 ms 1456 KB Output is correct
15 Correct 28 ms 1356 KB Output is correct
16 Correct 13 ms 2508 KB Output is correct
17 Correct 8 ms 1820 KB Output is correct
18 Correct 5 ms 1228 KB Output is correct
19 Correct 449 ms 1812 KB Output is correct
20 Correct 34 ms 1648 KB Output is correct
21 Correct 5 ms 1612 KB Output is correct
22 Correct 7 ms 1868 KB Output is correct
23 Correct 5 ms 1484 KB Output is correct
24 Correct 895 ms 1864 KB Output is correct
25 Correct 27 ms 1612 KB Output is correct
26 Correct 5 ms 1736 KB Output is correct
27 Correct 267 ms 1876 KB Output is correct
28 Correct 539 ms 1904 KB Output is correct
29 Correct 971 ms 2096 KB Output is correct
30 Correct 745 ms 1872 KB Output is correct
31 Correct 713 ms 2184 KB Output is correct
32 Correct 13 ms 1948 KB Output is correct
33 Correct 643 ms 88304 KB Output is correct
34 Correct 453 ms 60872 KB Output is correct
35 Correct 654 ms 85140 KB Output is correct
36 Correct 424 ms 60996 KB Output is correct
37 Correct 251 ms 41888 KB Output is correct
38 Correct 242 ms 37340 KB Output is correct
39 Execution timed out 2086 ms 59552 KB Time limit exceeded
40 Halted 0 ms 0 KB -