Submission #435737

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
435737	2021-06-23 16:21:16	bicsi	Keys (IOI21_keys)	C++17	100 / 100	1814 ms	114664 KiB

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#include <bits/stdc++.h>
 
using namespace std;
 
struct Solver {
  int n;
  vector<vector<int>> active;
  vector<multimap<int, int>> inactive;
  vector<set<int>> cols;
  vector<int> parent, df, link, bad;
 
  Solver(int n) : 
      n(n), active(n), inactive(n), cols(n),
      parent(n, -1), df(n, -1), link(n, -1), bad(n, 0) {}
 
  void AddEdge(int u, int v, int c) {
    if (cols[u].count(c))
      active[u].push_back(v);
    else 
      inactive[u].emplace(c, v);
  }
  void AddCol(int u, int c) {
    while (true) {
      auto it = inactive[u].find(c);
      if (it == inactive[u].end()) break;
      active[u].push_back(it->second);
      inactive[u].erase(it);
    }
    cols[u].insert(c);
  }
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33