Count Occurrences in a Sorted Array
Count how many times a target value occurs in a sorted array using binary search boundaries.
Input format
The first line contains N and the target. The second line contains N integers in non-decreasing order.
Output format
Print how many times the target occurs.
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
7 2
1 1 2 2 2 3 3Expected output
3Example 2
Input
3 5
1 2 3Expected output
0