Poj Solution 1319

http://poj.org/problem?id=1319

//* @author: 
import java.util.*;
public class Main {
  static final double l = Math.sqrt(3)/2;

  static int calc( double x, double y )
{
  int a[]=new int[2], s, i;
  double h;
  if( x < 1 )
    return 0;
  a[0] = (int)x;
  a[1] = (int)(x-0.5);
  for( i=0, h=1, s=0; h<=y; h+=l, i++ )
    s += a[i%2];
  return s;
}

 public static void main(String[] args){

   Scanner in = new Scanner(System.in);
   int s1, s2, t;    
   double x, y;
   while(in.hasNext())
   {
       x=in.nextDouble();
       y=in.nextDouble();
       s1 = (int)x * (int)y;
    s2 = calc( x, y );
    if( ( t = calc( y, x ) ) > s2 )
      s2 = t;
    if( s1 >= s2 )
         System.out.printf( "%d gridn", s1 );
    else
       System.out.printf( "%d skewn", s2 );
    }
  }
}