Submission #941671

#	Time	Username	Problem	Language	Result	Execution time	Memory
941671		emptypringlescan	Triple Jump (JOI19_jumps)	C++17	0 / 100	21 ms	4588 KiB

jumps

#include <bits/stdc++.h>
using namespace std;
int32_t main(){
    ios::sync_with_stdio(0);cin.tie(0);
    int n;
    cin >> n;
    long long arr[n];
    for(int i=0; i<n; i++) cin >> arr[i];
    long long suf[n];
    suf[n-1]=arr[n-1];
    for(int i=n-2; i>=0; i--) suf[i]=max(suf[i+1],arr[i]);
    vector<pair<long long,int> > mono;
    long long ans=0;
    for(int i=0; i<n; i++){
		while(!mono.empty()&&mono.back().second<=arr[i]){
			int a=mono.back().second;
			if(i*2-a<n) ans=max(ans,arr[a]+arr[i]+suf[i*2-a]);
			mono.pop_back();
		}
		if(!mono.empty()){
			int a=mono.back().second;
			if(i*2-a<n) ans=max(ans,arr[a]+arr[i]+suf[i*2-a]);
		}
		mono.push_back({arr[i],i});
	}
	cout << ans;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54