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Restaurant Customers cses problem solution with code and explanation

 Restaurant Customers cses problem solution -

Problem Statement-

  • Time limit: 1.00 s
  •  
  • Memory limit: 512 MB
You are given the arrival and leaving times of n customers in a restaurant.

What was the maximum number of customers?

Input

The first input line has an integer n: the number of customers.

After this, there are n lines that describe the customers. Each line has two integers a and b: the arrival and leaving times of a customer.

You may assume that all arrival and leaving times are distinct.

Output

Print one integer: the maximum number of customers.

Constraints
  • 1n2105
  • 1a<b109
Example

Input:
3
5 8
2 4
3 9


Output:
2

Restaurant Customers cses problem solution


solution-

Step 1- take input in a  vector which contain pair of int and bool and insert arrival time as true and leaving time as false.
Step 2- sort the vector.
stem 3- iterate over vector and when you found true update max if max > ans 
step 4- else if you strike false update ans as ans-1

Here is code solution -


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