Submission #745421

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
745421	2023-05-20 03:33:12	blue	Railway Trip (JOI17_railway_trip)	C++17	100 / 100	259 ms	17092 KiB

railway_trip

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#include <bits/stdc++.h>
using namespace std;
using vi = vector<int>;
using vvi = vector<vi>;
const int lg = 17;
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int N, K, Q;
  cin >> N >> K >> Q;
  vi L(1+N);
  for(int i = 1; i <= N; i++)
    cin >> L[i];
  int lh[1+lg][1+N], rh[1+lg][1+N];
  lh[0][1] = 1;
  for(int i = 2; i <= N; i++)
  {
    lh[0][i] = i-1;
    while(L[lh[0][i]] < L[i])
      lh[0][i] = lh[0][ lh[0][i] ];
  }
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 55 / 55