Problem:
Rectangle

Write a program which calculates the area and perimeter of a given rectangle.

Input

The length a and breadth b of the rectangle are given in a line separated by a single space.

Output

Print the area and perimeter of the rectangle in a line. The two integers should be separated by a single space.

Constraints

1 ≤ a, b ≤ 100

Sample Input 1

3 5

Sample Output 1

15 16

Solution in C# (judge verdict: Accepted)

using System;

namespace AOJ
{
    class Program1b
    {
        static void Main(string[] args)
        {
            string str = null;
            char ch = '\0';

            while (ch != ' ') 
            {
                int a = Console.Read();
                ch = (char)a;
                if( ch != ' ')
                {
                    str += ch;
                }
                
            } 

            int b = int.Parse(str);         //???????????§?????´??°??????b???????´???????

            

            str = null;
            while (ch != '\n')
            {
                int a = Console.Read();
                ch = (char)a;
                if (ch != '\n')
                {
                    str += ch;
                }

            }

             int c = int.Parse(str);

            Console.WriteLine(b*c + " " + (b*2 + c*2) );
        }
    }
}