Binge watching

#include <bits/stdc++.h>

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);

    long long n;
    std::cin >> n;

    std::vector<std::pair<int, int>> movies(n);
    for (int i = 0; i < n; i++) {
        int b, e;
        std::cin >> b >> e;
        movies[i] = {b, e};
    }
    std::ranges::sort(movies, [](const std::pair<int, int>& a, const std::pair<int, int>& b)->bool{ return a.second < b.second;});

    int count = 0;
    int last_end = 0;
    for (const auto&[begin, end] : movies) {
        if (begin < last_end) continue;
        last_end = end;
        count++;
    }

    std::cout << count << std::endl;
    return 0;
}

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