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 Ruby (judge verdict: Wrong Answer)

def result_1 a, b
  return a * b
end

def result_2 a, b
  return 2*(a + b)
end

a = gets.to_i
b = gets.to_i

puts result_1(a,b)
puts result_2(a,b)