Submission #438410

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
438410	2021-06-27 23:47:47	mango_lassi	Keys (IOI21_keys)	C++17	100 / 100	2109 ms	120008 KiB

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#include <vector>
#include <bits/stdc++.h>
using namespace std;
class DSU {
  private:
    vector<int> comp, siz;
  public:
    DSU(int n) : comp(n), siz(n, 1) {
      for (int i = 0; i < n; ++i) comp[i] = i;
    }
    int getc(int i) {
      if (comp[i] != i) comp[i] = getc(comp[i]);
      return comp[i];
    }
    bool join(int a, int b) {
      a = getc(a);
      b = getc(b);
      siz[a] += siz[b];
      comp[b] = a;
      return true;
    }
    int compSize(int i) { return siz[getc(i)]; }
};
struct Targets {
  set<int> act_outs, keys;
  set<pair<int, int>> outs;
};
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33