Submission #839448

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
839448	2023-08-30 04:06:14	dong_liu	Maze (JOI23_ho_t3)	C++17	100 / 100	1994 ms	852460 KiB

Main

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#pragma GCC optimize("O3,unroll-loops")
#include "bits/stdc++.h"
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...)
#endif
typedef pair<int, int> pi;
struct Range {
  vector<int> p;
  vector<bool> rem;
  Range(int n) : p(n), rem(n, false) {
    for (int i = 0; i < n; i++) p[i] = i;
  }
  int dsf(int i) {
    return p[i] == i ? i : p[i] = dsf(p[i]);
  }
  void dsj(int i, int j) { p[dsf(i)] = dsf(j); }
  bool has(int i) { return !rem[i]; }
  void remove(int i) {
    if (i > 0 && rem[i-1]) dsj(i-1, i);
    if (i+1 < int(p.size()) && rem[i+1]) dsj(i, i+1);
    rem[i] = 1;
 
 
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• Subtask 2: 19 / 19
• Subtask 3: 16 / 16
• Subtask 4: 19 / 19
• Subtask 5: 5 / 5
• Subtask 6: 19 / 19
• Subtask 7: 8 / 8
• Subtask 8: 6 / 6