"""
Given two integer arrays startTime and endTime and given an integer queryTime.

The ith student started doing their homework at the time startTime[i] and finished it at time endTime[i].

Return the number of students doing their homework at time queryTime. More formally, return the number of students where queryTime lays in the interval [startTime[i], endTime[i]] inclusive.

Example 1:
Input: startTime = [1,2,3], endTime = [3,2,7], queryTime = 4
Output: 1
Explanation: We have 3 students where:
The first student started doing homework at time 1 and finished at time 3 and wasn't doing anything at time 4.
The second student started doing homework at time 2 and finished at time 2 and also wasn't doing anything at time 4.
The third student started doing homework at time 3 and finished at time 7 and was the only student doing homework at time 4.

Example 2:
Input: startTime = [4], endTime = [4], queryTime = 4
Output: 1
Explanation: The only student was doing their homework at the queryTime.

Example 3:
Input: startTime = [4], endTime = [4], queryTime = 5
Output: 0

Example 4:
Input: startTime = [1,1,1,1], endTime = [1,3,2,4], queryTime = 7
Output: 0
"""


class Solution:
    def busyStudent(self, startTime, endTime, queryTime):
        students = 0
        for x, y in zip(startTime, endTime):
            if x <= queryTime <= y:
                students += 1
        return students


if __name__ == '__main__':
    s = Solution()
    print(s.busyStudent(startTime=[1, 2, 3], endTime=[3, 2, 7], queryTime=4))
