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Problem
Given a sorted array of integers and a number X, determine if X is present in the array. Print "YES" if found, otherwise "NO".
Input format
Input
input.txt
- The first line contains a single integer N (1 ≤ N ≤ 100). - The second line contains N integers in increasing order (-1000 ≤ Ai ≤ 1000). - The third line contains X.
Output format
Output
output.txt
- "YES" if X is present, "NO" otherwise.
Example
input
6 1 2 4 5 7 8 4
output
YES
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Sample cases (from the problem)
Sample Case 1
Input
6 1 2 4 5 7 8 4
Expected output
YES
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