제출 #563514

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
563514	2022-05-17 11:34:58	amunduzbaev	Railway Trip (JOI17_railway_trip)	C++17	100 / 100	428 ms	122212 KiB

railway_trip

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#include "bits/stdc++.h"
using namespace std;
 
#define ar array
const int N = 2e5 + 5;
const int inf = N;
vector<int> edges[N], pos[N];
int a[N], par[N][20], path[N][20][2][2], p[N];
int st[N][20], tin[N], tout[N], t;
int L[N], R[N], ver[N], sz[N];
signed main(){
  ios::sync_with_stdio(0); cin.tie(0);
  
  int n, k, q; cin>>n>>k>>q;
  for(int i=0;i<n;i++){
    cin>>a[i];
    st[i][0] = a[i];
    pos[a[i]].push_back(i);
  }
  
  for(int j=1;j<20;j++){
    for(int i=0;i+(1 << (j - 1)) < n;i++){
      st[i][j] = max(st[i][j-1], st[i + (1 << (j - 1))][j-1]);
    }
  }
  
  auto ger = [&](int l, int r){
    int lg = __lg(r - l + 1);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 55 / 55