Binge watching

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n;
    cin >> n;

    vector<pair<int, int>> v;
    for (int i = 0; i < n; i++) {
        int a, b;
        cin >> a >> b;
        v.push_back(make_pair(a, b));
    }

    auto comp = [](pair<int, int> x, pair<int, int> y) {
        return x.second < y.second;
    };

    sort(v.begin(), v.end(), comp);

    // for (auto z : v) {
    //     cout << z.first << " " << z.second << "\n";
    // }

    int res = 1;
    pair<int, int> cur = v[0];
    for (int j = 1; j < n; j++) {
        if (cur.second <= v[j].first) {
            res++;
            cur = v[j];
        }
    }
    cout << res << "\n";
}

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