conference-schedule.py

#!/bin/python3

import math
import os
import random
import re
import sys



#
# Complete the 'maxPresentations' function below.
#
# The function is expected to return an INTEGER.
# The function accepts following parameters:
#  1. INTEGER_ARRAY scheduleStart
#  2. INTEGER_ARRAY scheduleEnd
#

def maxPresentations(scheduleStart, scheduleEnd):
    # Write your code here
    sl = sorted((list(zip(*[scheduleStart, scheduleEnd]))), key = lambda x:x[1])
    sl = list(zip(*sl))
    lim = sl[1][0]
    n = 1
    for i in range(1, len(scheduleEnd)):
        if sl[0][i] >= lim:
            n += 1
            lim = sl[1][i]
            # print(sl[0][i], sl[1][i])
    return n
if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    scheduleStart_count = int(input().strip())

    scheduleStart = []

    for _ in range(scheduleStart_count):
        scheduleStart_item = int(input().strip())
        scheduleStart.append(scheduleStart_item)

    scheduleEnd_count = int(input().strip())

    scheduleEnd = []

    for _ in range(scheduleEnd_count):
        scheduleEnd_item = int(input().strip())
        scheduleEnd.append(scheduleEnd_item)

    result = maxPresentations(scheduleStart, scheduleEnd)

    fptr.write(str(result) + '\n')

    fptr.close()