程序代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication7
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("请输入s1");
            string s1 = Console.ReadLine();
            int password = Convert.ToInt32(s1);
            Console.WriteLine("请输入s2");
            string s2 = Console.ReadLine();

            int age =  Convert.ToInt32(s2);
            if (age >= 0 && password >= 0)
            {
                Console.WriteLine(age * password);
            }
            else
            {
                if (age < 0 && password < 0)
                    Console.WriteLine((password - 10) * age);
                else
                {
                    if (age == 0 || password == 0)
                    {
                        Console.WriteLine("输入错误");
                    }
                    else
                    {
                        Console.WriteLine(Math.Abs(password * age));
                    }
                }
            }

            Console.ReadKey();
        }
    }
}