Submission #1052376

#	Time	Username	Problem	Language	Result	Execution time	Memory
1052376		erray	Island Hopping (JOI24_island)	C++17	65 / 100	5 ms	856 KiB

island

#include "island.h"
#include <bits/stdc++.h>

using namespace std;

#ifdef DEBUG 
  #include "/home/hp/contests/joi24scd4/debug.h"
#else 
  #define debug(...) void(37)
#endif

void solve(int N, int L) {
  /*
  int variable_example = query(1, 1);
  for (int i = 2; i <= N; i++) {
    answer(1, i);
  }
  */
  int root = 0;
  vector<int> ord;
  for (int i = 1; i < N; ++i) {
    ord.push_back(query(root + 1, i) - 1);
  }
  vector<int> ind(N, -1);
  for (int i = 0; i < N - 1; ++i) {
    ind[ord[i]] = i;
  }
  vector<int> par(N, -1);
  for (int i = N - 1; i > 0; --i) {
    if (par[i] == -1) {
      int v = i;
      int s = 0;
      do {
        par[v] = i;
        v = query(i + 1, ++s) - 1;
      } while (ind[v] > ind[i]);
      par[i] = v;
    }
    answer(i + 1, par[i] + 1);
  }
}

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 0 / 7
• Subtask 4: 9 / 9
• Subtask 5: 13 / 13
• Subtask 6: 15 / 15
• Subtask 7: 22 / 22
• Subtask 8: 0 / 28