Method Definition: With Return Value

In this problem, you will define add and multiply methods with return values in a Calculator class.

Learning Objective: Understand definition and usage of methods with return values

Specifications

• Create a Calculator class
• add(int a, int b) method returns the sum of two integers
• multiply(int a, int b) method returns the product of two integers

Input Format

Four integers, one per line:

• Line 1: first argument for add
• Line 2: second argument for add
• Line 3: first argument for multiply
• Line 4: second argument for multiply

Output Format

result of add(a1, b1)
result of multiply(a2, b2)

Example

Input:

5
3
5
3

Output:

8
15