Binge watching

def function(n, movies):
    movies.sort(key=lambda x: x[1])
    count = 0
    last_end_time = -1

    for movie in movies:
        start, end = movie

        if start >= last_end_time:
            count += 1
            last_end_time = end

    return count


def main():
    # input :
    # 3
    # 3 5
    # 4 9
    # 5 8

    n = int(input())
    movies = []

    for _ in range(n):
        a, b = map(int, input().split())
        
        movies.append([a, b])


    result = function(n, movies)
    print(result)



if __name__ == "__main__":
    main()

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED