The number of odd ones is 2
Execution time limit is 1 second
Runtime memory usage limit is 64 megabytes
The program receives a natural number n as input. Your task is to output the count of odd natural numbers that are less than n.
Input
A natural number n that does not exceed 10^18.
Output
The solution to the problem.
Examples
Input #1
Answer #1
Input #2
Answer #2
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