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: Wrong Answer)

using System;

namespace ITP1_1_C
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = 3, b = 5;
            Console.WriteLine("面積＝ {0}, 周の長さ＝ {1}", a * b, (a + b) * 2);
        }
    }
}