Submission #1193936

#	Time	Username	Problem	Language	Result	Execution time	Memory
1193936		ezzzay	Rainforest Jumps (APIO21_jumps)	C++20	21 / 100	4043 ms	18604 KiB

jumps

#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
vector<int>v[400000];
void init(int N, std::vector<int> H){
	for(int i=0;i<N;i++){
		for(int j=i+1;j<N;j++){
			if(H[j]>=H[i]){
				v[i].pb(j);
				break;
			}
		}
	}
	for(int i=0;i<N;i++){
		for(int j=i-1;j>=0;j--){
			if(H[j]>=H[i]){
				v[i].pb(j);
				break;
			}
		}
	}
	
	
}
int minimum_jumps(int A, int B, int C, int D) {
	queue<int>q;
	vector<int>dst(3e5);
	for(int i=0;i<3e5;i++)dst[i]=1e6;
	for(int i=A;i<=B;i++){
		dst[i]=0;
		q.push(i);
	}
	while(!q.empty()){
		int a=q.front();
		q.pop();
		for(auto b:v[a]){
			if(dst[b]==1e6){
				dst[b]=dst[a]+1;
				q.push(b);
			}
		}
	}
	int ans=1e6;
	for(int i=C;i<=D;i++){
		ans=min(ans,dst[i]);
	}
	if(ans==1e6)ans=-1;
	return ans;
}

• Subtask 1: 0 / 4
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 23
• Subtask 6: 0 / 21
• Subtask 7: 0 / 19