Choose Numbers

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#10 建立於 2020年9月23日 1 則留言 0 個 reaction 已指派 0 人在 GitHub 檢視

描述

You are given an array of integers A.
You need to tell whether you can choose three numbers such that a+b>=c.

Input Format
First line consists of number of integers N. next line consists of N space separated integers.

Constraints
1 <= N <= 10^5

Output Format
YES or NO

Sample Input
5
1 2 3 4 9
Sample Output
YES
Explanation
you can choose 1+3 >= 4

Solve the question and raise the Pull Requests.

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