Count one stock level

Problem

A sorted list holds stock levels, and the same level can appear many times. Read a level x and print how many times it appears.

Example

Input

6
5 10 10 10 20 30
10

Output

Try the problem first. Open one hint at a time.

Hint 1

Count equals the upper bound minus the lower bound of x.

Hint 2

bisect_left and bisect_right give those two positions.

Write your Python code, run it on the examples and submit it to hidden tests.