Task Hare

You are given a list of integers tasks and another list of integers people. The integer tasks[i] represents the amount of strength required to perform the ith task. people[i] represents the amount of strength the ith person has.

Return the number of tasks that can be finished if one person can perform at most one task.

Constraints

• n ≤ 100,000 where n is the length of tasks
• m ≤ 100,000 where m is the length of people

https://binarysearch.com/problems/Task-Hare

Examples

Example 1

Input

• tasks = [3, 2, 9, 13]
• people = [10, 5, 2, 1]

Output

• answer = 3

Explanation

• First person can perform task 9
• Second person can perform task 3
• Third person can perform task 2
• Fourth person can’t perform any tasks

Solution