All test case not passing

#1

import java.util.;
public class Main {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
int a= sc.nextInt();
int b,c;
if(a%2==0){
b=(a/2a/2)-1;
c=b+2;
}else {
b=((a*a)-1)/2;
c=b+1;
}
System.out.print(b);
System.out.print(" ");
System.out.print©;

}

}

#2

@Shivam_balwani,
https://ide.codingblocks.com/s/250976 corrected code.

2 errors:

  1. Use long instead of int.
  2. Add condition in case a < 3.