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Python for kids 路 Lesson 17: input() - reading a number

Problem Statement

Read two numbers a and b (on two lines) and print a - b.

Input Format

Two whole numbers a and b, each on its own line (0 <= a, b <= 1000).

Output Format

One number - the result.

Examples
Example 1

Input

10
4

Output

6
Example 2

Input

4
10

Output

-6