Apple Procurement Calculation

You are given the number of students in a class. Each student is meant to receive a fixed number of apples. In this problem, the fixed number is 3. Your task is to calculate the total number of apples that need to be purchased.

The total number of apples is given by the formula: $$Total\ Apples = n \times 3$$ where n is the number of students.

inputFormat

The input consists of a single line containing an integer n which represents the number of students.

outputFormat

Output the total number of apples to be purchased.

sample

1

3