Binge watching

n = int(input())
movies = []
for i in range(n):
    movies.append([int(x) for x in input().split()])

movies.sort(key=lambda x: (x[1], -x[0]))
end = movies[0][1]
nbr = 0

for i in range(1, n):
    if movies[i][0] >= end:
        end = movies[i][1]
    else:
        nbr += 1

print(n-nbr)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: TIME LIMIT EXCEEDED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: TIME LIMIT EXCEEDED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED