QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#576341#9313. Make MaxlpWA 198ms17848kbC++142.6kb2024-09-19 19:59:502024-09-19 19:59:50

Judging History

你现在查看的是最新测评结果

  • [2024-09-19 19:59:50]
  • 评测
  • 测评结果:WA
  • 用时:198ms
  • 内存:17848kb
  • [2024-09-19 19:59:50]
  • 提交

answer

#include<algorithm>//sort
#include<cstring>
#include<iostream>
#include<map>
#include<queue>
#include<stack>
#include<utility>//pair
#include<map>
#include<stack>
#include<vector>
//#define int long long
using namespace std;
//void so()
//{
//	int n,s;
//	long long sum = 0;
//	stack<int>q;
//	map<int, int>ma;
//	cin >> n;
//	for (int i = 1; i <= n; i++)
//	{
//		cin >> s;
//		ma[s] = 1;
//		while (q.size() && q.top()<s)
//		{
//			ma[s] += ma[q.top()];
//			sum += ma[q.top()];
//			q.pop();
//		}
//		q.push(s);
//	}
//	int a[200005];
//	n = q.size();
//	while (q.size())
//	{
//		a[q.size()] = q.top();
//		q.pop();
//	}
//	int ss = 0;
//	for (int i = n; i >= 2; i--)
//	{
//		if (a[i] != a[i - 1])
//		{
//			sum += a[i];
//		}
//		ss += a[i];
//	}
//	cout << sum << endl;
//}
void so()
{
	int n;
	cin >> n;
	vector<int>a(n),b(n);
	vector<vector<int>> vec(n);
	for (int i = 0; i < n; i++)
	{
		cin >> a[i];
		b[i] = a[i];
	}
	//离散化,只需要知道大小
	sort(b.begin(), b.end());//排序
	unique(b.begin(), b.end());//去重
	for (int i = 0; i < n; ++i) 
	{
		a[i] = lower_bound(b.begin(), b.end(), a[i]) - b.begin();
		vec[a[i]].push_back(i);//!!!
	}
	vector<int> lst(n);
	vector<int> rst(n);
	stack<int>sta;
	for (int i = 0; i < n; i++)
	{
		while (sta.size() && a[sta.top()] <= a[i])
		{
			sta.pop();
		}
		lst[i] = sta.size()?sta.top():-1;
		sta.push(i);//下标入栈
	}
	while (sta.size()) sta.pop();
	for (int i = n-1; i >=0; i--)
	{
		while (sta.size() && a[sta.top()] <=a[i])
		{
			sta.pop();
		}
		rst[i] = sta.size() ? sta.top() : -1;
		sta.push(i);
	}
	vector<int>c(n);
	long long anss = 0;
	for (int i = 0; i < n; i++)
	{
		for (auto j: vec[i])
		{
			int fa;
			if (rst[j] == -1 && lst[j] == -1) continue;
			if (lst[j] == -1)
			{
				fa = rst[j];
			}
			else if(rst[j]==-1)
			{
				fa = lst[j];
			}
			else if (lst[j] > rst[j])
			{
				fa = rst[j];
			}
			else 
			{
				fa = lst[j];
			}
			c[fa] = c[fa]+c[j] + 1;
			anss += c[j] + 1;
		}
	}
	cout << anss << '\n';
	/*vector<int> ans(n);
	for (int j = n - 1; j >= 0; --j) {
		for (auto& i : vec[j]) {
			int fa;
			if (rst[i] == -1 && lst[i] == -1) continue;
			if (rst[i] == -1) fa = lst[i];
			else if (lst[i] == -1) fa = rst[i];
			else if (a[rst[i]] > a[lst[i]]) fa = lst[i];
			else fa = rst[i];
			ans[i] = ans[fa] + 1;
		}
	}

	long long anss = 0;
	for (int i = 0; i < n; ++i) {
		anss += ans[i];
	}
	cout << anss << '\n';*/
}
int main()
{
	int t;
	cin >> t;
	while (t--)
	{
		so();
	}
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3568kb

input:

4
2
1 2
2
2 2
7
1 1 1 2 2 2 2
3
1 2 3

output:

1
0
3
3

result:

ok 4 number(s): "1 0 3 3"

Test #2:

score: -100
Wrong Answer
time: 198ms
memory: 17848kb

input:

2
198018
875421126 585870339 471894633 383529988 625397685 944061047 704695631 105113224 459022561 760848605 980735314 847376362 980571959 329939331 644635272 326439858 752879510 837384394 175179068 182094523 397239381 1199016 185143405 279638454 252374970 822030887 860312140 137248166 993229443 164...

output:

2151880
2292908

result:

wrong answer 1st numbers differ - expected: '4084978', found: '2151880'