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Height

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Time limit2sMemory limit1024 MB

Summary
Given JOI's height a year ago and his height now, print how many centimeters he grew.
Level

Easy1 of 10

Topics
Math, Implementation
Solved
No attempts yet

Problem

JOI's height one year ago was A cm, and his height now is B cm.

It is known that JOI's height grew over this one year.

Output how many cm JOI's height grew over this one year.

Input

The input is given from standard input in the following format.

A
B

Output

Output how many cm JOI's height grew over this one year, omitting the unit (cm).

Constraints

  • 100 ≦ A ＜ B ≦ 200.
  • All input values are integers.

Examples3

  1. Example 1

    Input
    150
155
    Expected output
    5

  2. Example 2

    Input
    100
101
    Expected output
    1

  3. Example 3

    Input
    100
200
    Expected output
    100