Submission #823906

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
823906	2023-08-13 09:58:24	tch1cherin	Joker (BOI20_joker)	C++17	100 / 100	561 ms	50548 KiB

Joker

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#include <bits/stdc++.h>
using namespace std;
struct dsu {
  int size;
  int _bipartite;
  vector<vector<pair<int*, int>>> updates;
  vector<int> parent, rank;
  dsu(int _size) : size(_size), _bipartite(1), parent(2 * _size, -1), rank(2 * _size, 1) {}
  int _get(int u) {
    return parent[u] == -1 ? u : _get(parent[u]);
  }
  void _unite(int u, int v) {
    u = _get(u), v = _get(v);
    if (u != v) {
      if (rank[u] < rank[v]) {
        swap(u, v);
      }
      updates.back().push_back(pair {&parent[v], parent[v]});
      updates.back().push_back(pair {&rank[u], rank[u]});
      parent[v] = u;
      rank[u] += rank[v];
    }
  }
  void unite(int u, int v) {
    updates.push_back({});
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 8 / 8
• Subtask 3: 25 / 25
• Subtask 4: 10 / 10
• Subtask 5: 22 / 22
• Subtask 6: 29 / 29