Drawing book hacker rank soluion java8

[Saurabhofficial7]

import java.io.;
import java.util.;
import java.text.;
import java.math.;
import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    int n = in.nextInt();
    int p = in.nextInt();
    
    int beg = (p/2);
    int end = 0;
    if(n%2==1)
        end = (n-p)/2;
    else
        end = (int) Math.ceil((n-p)/2.0);
    
    System.out.println(Math.min(beg,end));
}

}