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

namespace AOJ.Codes
{
    class ITP1_1_C_Rectangle
    {
        static void Main(string[] args)
        {
            //読み込み
            var x = Console.ReadLine().Split().Select(int.Parse).ToArray();
            var a = x[0];
            var b = x[1];

            //計算
            var area = a * b;
            var len = 2 * (a + b);

            //出力
            Console.WriteLine(area + " " + len);

            //Enterを押して終了
            Console.ReadLine();
        }
    }
}