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下载 Olymp Trade 应用程序手机

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AJAO TOOSIN 交易者

2021-08-29 20:16 发表于 尼日利亚

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I got scammed from this app of recent,I deposited 52000 naira to this app claiming to double my money for me in the next 24hours,after 下载 Olymp Trade 应用程序手机 24hrs nothing was received and I even call their customer care they all blocked me,please run away from them

Codeforces 下载 Olymp Trade 应用程序手机 Round #765 (Div. 2)B. Elementary Particles

~晚风微凉~ 于 2022-01-13 01:04:36 发布 189 收藏 1

Martians are actively engaged in interplanetary trade. Olymp City, the Martian city known for 下载 Olymp Trade 应用程序手机 its spaceport, has become a place where goods from all the corners of our Galaxy come. To deliver even more 下载 Olymp Trade 应用程序手机 freight from faraway planets, Martians need fast spaceships.

A 下载 Olymp Trade 应用程序手机 下载 Olymp Trade 应用程序手机 group of scientists conducts experiments to build a fast engine for the new spaceship. In the current experiment, there are 下载 Olymp Trade 应用程序手机 n elementary particles, the i-th of them has type ai.

Denote a subsegment of the particle sequence (a1,a2,…,an) as a sequence (al,al+1,…,ar) for some left bound l and right bound r (1≤l≤r≤n). For 下载 Olymp Trade 应用程序手机 instance, the sequence (1 4 2 8 5 7) for l=2 and r=4 has the sequence (4 2 8) as a subsegment. Two subsegments are considered different if at least one bound of those subsegments differs.

Note that the subsegments can be equal as sequences but still considered different. For example, consider the sequence (1 1 1 1 1) and two of its subsegments: one with l=1 and 下载 Olymp Trade 应用程序手机 r=3 and another with l=2 and r=4. Both subsegments are equal to (1 1 1), but still considered different, as their left and right bounds differ.

The scientists want to conduct a reaction to get two different subsegments of the same length. Denote this length k. The resulting pair 下载 Olymp Trade 应用程序手机 of subsegments must be harmonious, i. e. for some i (1≤i≤k) it must be true that the types of particles on the i-th position are the same for these two subsegments. For example, the pair (1 7 3) and (下载 Olymp Trade 应用程序手机 4 7 8) is harmonious, as both subsegments have 下载 Olymp Trade 应用程序手机 7 on the second position. The pair (1 2 3) and (3 1 2) is not harmonious.

The longer are harmonious subsegments, the more chances for the scientists to design a fast engine. So, they asked you to calculate the maximal possible length of harmonious pair made of different subsegments.

Input
The first line contains an integer t (1≤t≤100) — the number of test cases. The following are descriptions of the test cases.

The first line contains an integer n (2≤n≤150000) — the amount of elementary particles in the sequence.

The second line contains n integers ai (1≤ai≤150000) — types of elementary particles.

It is guaranteed that the sum of n over all test cases does not exceed 3⋅105.

Output
For each test, print a single integer, maximal possible length of harmonious pair made of different subsegments. If such pair does not exist, print −1 instead.

Example
inputCopy
4
7
3 1 5 2 1 3 下载 Olymp Trade 应用程序手机 4
6
1 1 1 1 1 1
6
1 4 2 8 5 7
2
15 15
outputCopy
4
5
-1
1
Note
The first test case is shown on the picture below:

As you can see from it, you may choose the subsegments (2 1 3 4) and (3 1 5 2), which are a harmonious pair. Their length is equal to 4, so the answer is 4.

In the second test case, you need to 下载 Olymp Trade 应用程序手机 take two subsegments: one with l=1 and r=5, and one with l=2 and r=6. It’s not hard to observe that these segments are a harmonious pair and considered different even though they are both equal to (1 1 1 下载 Olymp Trade 应用程序手机 1 1).

In the third test case, you cannot make 下载 Olymp Trade 应用程序手机 下载 Olymp Trade 应用程序手机 a harmonious pair, so the answer is −1.
好久没写cf了,希望之后能够上分
题意:
就是要你找到能够让两个长度相同(但不完全相同的)子串有某个同一位置的数字相同,求那个最大的子串长度