using System;
namespace P10_9
{
    class Program
    {
        const int x = 2147483647;   // 
        const int y = 2;
        static void Main(string[] args)
        {
            int z;
            unchecked
            {
                z = x * y;
            }
            Console.WriteLine("uncheckedֵǣ{0}", z);
            Console.ReadLine();
        }
    }
}
