Submission #476815

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
476815	2021-09-28 15:07:51	Everifall	Rainforest Jumps (APIO21_jumps)	C++14	100 / 100	1562 ms	52780 KiB

jumps

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#include "jumps.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5 + 16;
const int MLOG = 21;
int arr[MAXN],spRight[MLOG][MAXN],spLeft[MLOG][MAXN],spBest[MLOG][MAXN];
void init(int N,vector<int> H){
  arr[0] = arr[N+1] = N+8;
  for(int i=1;i<=N;i++){
    arr[i] = H[i-1];
  }
  stack<int> stkRight,stkLeft;
  for(int i=0;i<=N+1;i++){
    while((!stkRight.empty()) && arr[stkRight.top()] <= arr[i]){
      spRight[0][stkRight.top()] = i;
      stkRight.pop();
    }
    stkRight.push(i);
  }
  spRight[0][N+1] = N+1;
  for(int i=N+1;i>=0;i--){
    while((!stkLeft.empty()) && arr[stkLeft.top()] <= arr[i]){
      spLeft[0][stkLeft.top()] = i;
      stkLeft.pop();
    }
    stkLeft.push(i);
  }
 
 
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• Subtask 1: 4 / 4
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 12 / 12
• Subtask 5: 23 / 23
• Subtask 6: 21 / 21
• Subtask 7: 19 / 19