Submission #440205

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
440205	2021-07-01 18:00:41	koioi.org-koosaga	Keys (IOI21_keys)	C++17	100 / 100	1840 ms	146092 KiB

keys

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#include <bits/stdc++.h>
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
using namespace std;
using lint = long long;
using pi = pair<int, int>;
const int MAXN = 600005;
 
struct disj{
  int pa[MAXN];
  void init(){
    iota(pa, pa + MAXN, 0);
  }
  int find(int x){
    return pa[x] = (pa[x] == x ? x : find(pa[x]));
  }
  bool uni(int p, int q){
    p = find(p);
    q = find(q);
    if(p == q) return 0;
    pa[q] = p; return 1;
  }
}disj;
 
set<int> keys[MAXN];
set<pi> gph[MAXN];
vector<int> canReach[MAXN];
int comp[MAXN], nxt[MAXN];
int idx[MAXN], sz[MAXN];
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33