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Problem
Given an array of integers, determine if any three distinct elements sum to zero. Print "YES" or "NO".
Input format
Input
input.txt
- An integer N (3 ≤ N ≤ 100) - N integers
Output format
Output
output.txt
- "YES" if such a triplet exists, "NO" otherwise.
Example
input
5 -1 2 -3 4 2
output
YES
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Sample cases (from the problem)
Sample Case 1
Input
5 -1 2 -3 4 2
Expected output
YES
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