HackerRank - Drawing Book

https://www.hackerrank.com/challenges/drawing-book/problem

 

HackerRank - Drawing Book

 

#!/bin/python3
​
import os
import sys
​
​
def pageCount(n, p):
    fromFront = p / 2
    fromBack = 0
    if(n % 2):
        fromBack = (n - p) / 2
    else:
        fromBack = (n - p + 1) / 2
    return min(int(fromFront), int(fromBack))
​
​
if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')
​
    n = int(input())
​
    p = int(input())
​
    result = pageCount(n, p)
​
    fptr.write(str(result) + '\n')
​
    fptr.close()
​