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Safe division

Beginner

Python for kids 路 Lesson 28: Checking the data - before we calculate

Problem Statement

Read two numbers a and b. If b is zero, print BLAD (error). Otherwise print the result of a // b.

Input Format

Two whole numbers a and b (-1000..1000), each on its own line.

Output Format

A number or BLAD.

Examples
Example 1

Input

17
5

Output

3
Example 2

Input

17
0

Output

BLAD