Submission #825591

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
825591	2023-08-15 05:27:55	MohamedAhmed04	Railway Trip (JOI17_railway_trip)	C++14	100 / 100	126 ms	18788 KiB

railway_trip

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#include <bits/stdc++.h>
using namespace std ;
const int MAX = 1e5 + 10 ;
int arr[MAX] ;
int n , k , q ;
int L[MAX][20] , R[MAX][20] ;
int solve(int x , int y)
{
  int ans = 0 ;
  int l = x , r = x ;
  for(int i = 19 ; i >= 0 ; --i)
  {
    if(max(R[l][i] , R[r][i]) < y)
    {
      ans += (1 << i)  ;
      int l2 = l , r2 = r ;
      l = min(L[l2][i] , L[r2][i]) ;
      r = max(R[l2][i] , R[r2][i]) ;
    }
  }
  x = r ;
  l = r = y ;
  for(int i = 19 ; i >= 0 ; --i)
  {
    if(min(L[l][i] , L[r][i]) > x)
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 55 / 55