Canadian Computing Competition: 2022 Stage 1, Junior #1

A regular box of cupcakes holds ~8~ cupcakes, while a small box holds ~3~ cupcakes. There are ~28~ students in a class and a total of at least ~28~ cupcakes. Your job is to determine how many cupcakes will be left over if each student gets one cupcake.

Input Specification

The input consists of two lines.

• The first line contains an integer ~R \ge 0~, representing the number of regular boxes.
• The second line contains an integer ~S \ge 0~, representing the number of small boxes.

Output Specification

Output the number of cupcakes that are left over.

Sample Input 1

2
5

Output for Sample Input 1

3

Explanation of Output for Sample Input 1

The total number of cupcakes is ~2 \times 8 + 5 \times 3~ which equals ~31~. Since there are ~28~ students, there are ~3~ cupcakes left over.

Sample Input 2

2
4

Output for Sample Input 2

0

Explanation of Output for Sample Input 2

The total number of cupcakes is ~2 \times 8 + 4 \times 3~ which equals ~28~. Since there are ~28~ students, there are no cupcakes left over.