Submission #1256259

#	Time	Username	Problem	Language	Result	Execution time	Memory
1256259		bynix	Obstacles for a Llama (IOI25_obstacles)	C++20	24 / 100	68 ms	7496 KiB

obstacles

#include "obstacles.h"
#include "bits/stdc++.h"
using namespace std;

vector<int> id;

void initialize(vector<int> T, vector<int> H) {
  int N = T.size(), M = H.size();
  id.resize(M, 0);

  int c = 1;
  if (M == 1) return;
  for (int i = 1; i < M; i++){
    if ((T[N-1] > H[i]) == (T[N-1] > H[i-1])) id[i] = id[i-1];
    else id[i] = c, c++;
  }
}

bool can_reach(int L, int R, int S, int D) {
  return id[S] == id[D];
}

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 21
• Subtask 5: 0 / 25
• Subtask 6: 0 / 17