Binge watching

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

for i in range(n):
    start, end = map(int, input().split())
    movies.append((end, start))

movies.sort()

current_end = 0
num = 0

for end, start in movies:
    if start >= current_end:
        current_end = end
        num += 1

print(num)

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