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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#140254#5500. BarsPhantomThreshold#WA 190ms3704kbC++20824b2023-08-15 16:07:222023-08-15 16:07:25

Judging History

你现在查看的是最新测评结果

  • [2023-08-15 16:07:25]
  • 评测
  • 测评结果:WA
  • 用时:190ms
  • 内存:3704kb
  • [2023-08-15 16:07:22]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int main()
{
	ios_base::sync_with_stdio(false);
	int T;
	cin>>T;
	while(T--)
	{
		int n;
		cin>>n;
		vector<int> a(n+5),mk(n+5);
		for(int i=1;i<=n;i++)
		{
			cin>>a[i];
		}
		vector<pair<int,int>> st;
		for(int i=1;i<=n;i++)
		{
			while(st.size()>=2u and (st[st.size()-1].first-st[st.size()-2].first)*(a[i]-st[st.size()-1].second)-(st[st.size()-1].second-st[st.size()-2].second)*(i-st[st.size()-1].first)>=0)st.pop_back();
			st.emplace_back(i,a[i]);
		}
		for(auto [i,x]:st)
		{
			mk[i]=1;
		}
		long long ans=0;
		int last=0;
		for(int i=1;i<=n;i++)
		{
			if(last)ans+=a[last];
			if(mk[i])last=i;
		}
		last=n+1;
		for(int i=n;i>=1;i--)
		{
			if(last!=n+1)ans+=a[last];
			if(mk[i])last=i;
		}
		cout<<ans<<endl;
	}
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3444kb

input:

2
4
5 2 2 6
5
1 5 4 4 1

output:

33
29

result:

ok 2 lines

Test #2:

score: -100
Wrong Answer
time: 190ms
memory: 3704kb

input:

10000
4
5 2 2 6
5
1 5 4 4 1
197
763787596 15221694 898228999 187472305 466351873 822742732 437754202 800092772 843092246 915675776 166265020 346340615 796714085 497548541 182089610 64356048 363276768 181268733 257949015 236568898 752096761 928725929 443146784 114577469 833053207 38120723 14891030 41...

output:

33
29
184637807660
486604203610
338575311041
458946673513
296420749955
579550546230
430671642971
336463189483
225238173690
530830585076
327078524251
187526117716
585094154153
129061680368
336548832140
272416636667
280602730458
345754633893
307474973352
340358976830
489473288287
677653603843
26408806...

result:

wrong answer 3rd lines differ - expected: '382465638565', found: '184637807660'