using System;
public class Program
{
public static void Main()
Console.WriteLine("Hello World");
}
double y,a=-5.7 ,b=12.4;
int x;
y=Math.Round(12.5);
Console.WriteLine("y={0}",y);
y=Math.Round(12.51);
y=Math.Round(a+b);
x=(int) (Math.Round(a));
Console.WriteLine("x={0}",x);
x=(int) (Math.Round(a+0.5));