Submission #484113

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
484113	2021-11-02 06:13:30	MilosMilutinovic	Rainforest Jumps (APIO21_jumps)	C++14	100 / 100	1422 ms	161692 KiB

jumps

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "jumps.h"
#include <bits/stdc++.h>
using namespace std;
const int N=200050;
const int LOG=25;
int a[N],l[N],r[N],L[N][LOG],st[N][LOG];
tuple<int,int,int> mn[N][LOG],mx[N][LOG];
int getmx(int l,int r){
  int res=0;
  for(int i=LOG-1;~i;i--)if(l+(1<<i)-1<=r)res=max(res,st[l][i]),l+=(1<<i);
  return res;
}
void init(int n,vector<int> h){
  for(int i=1;i<=n;i++)a[i]=h[i-1],st[i][0]=a[i];
  for(int j=1;j<LOG;j++)for(int i=1;i+(1<<j)<=n+1;i++)st[i][j]=max(st[i][j-1],st[i+(1<<(j-1))][j-1]);
  stack<int> stk;
  for(int i=1;i<=n;i++){
    while(!stk.empty()&&a[stk.top()]<a[i])stk.pop();
    if(!stk.empty())l[i]=stk.top();
    else l[i]=0;
    stk.push(i);
  }
  while(stk.size())stk.pop();
  for(int i=n;i>=1;i--){
    while(!stk.empty()&&a[stk.top()]<a[i])stk.pop();
    if(!stk.empty())r[i]=stk.top();
    else r[i]=0;
    stk.push(i);
  }
  for(int i=1;i<=n;i++){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

jumps.cpp: In function 'int minimum_jumps(int, int, int, int)':
jumps.cpp:55:6: warning: unused variable 'x' [-Wunused-variable]
   55 |  int x=getmx(C,D),pos=B;
      |      ^

• 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