Submission #1172246

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1172246	2025-03-23 05:30:08	gyg	Keys (IOI21_keys)	C++20	100 / 100	1745 ms	373460 KiB

keys

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#include "keys.h"
#include <bits/stdc++.h>
using namespace std;
#define vec vector
#define arr array 
#define pii pair<int, int>
#define fir first 
#define sec second 
#define hset unordered_set
#define hmap unordered_map
const int N = 3e5 + 5, INF = 1e9;
// Zero indexing
int n;
arr<int, N> cl;
arr<vec<pii>, N> adj;
struct Dsj {
  arr<int, N> prnt;
  void intl() {
    for (int u = 0; u < n; u++)
      prnt[u] = u;
  }
  int pr(int u) {
    return (prnt[u] == u) ? u : prnt[u] = pr(prnt[u]);
  }
  void mrg(int u, int v) { // v into u
    u = pr(u), v = pr(v);
    assert(u != v);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33