Binge watching

In file included from /usr/include/c++/11/bits/stl_algobase.h:71,
                 from /usr/include/c++/11/bits/char_traits.h:39,
                 from /usr/include/c++/11/ios:40,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from input/code.cpp:1:
/usr/include/c++/11/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = __gnu_cxx::__normal_iterator<std::vector<int>*, std::vector<std::vector<int> > >; _Iterator2 = __gnu_cxx::__normal_iterator<std::vector<int>*, std::vector<std::vector<int> > >; _Compare = main()::<lambda(const std::pair<int, int>&, const std::pair<int, int>&)>]':
/usr/include/c++/11/bits/stl_algo.h:82:17:   required from 'void std::__move_median_to_first(_Iterator, _Iterator, _Iterator, _Iterator, _Compare) [with _Iterator = __gnu_cxx::__normal_iterator<std::vector<int>*, std::vector<std...

#include <iostream>
#include <vector>
#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    cin >> n;
    vector<vector<int>> movies(n);
    for (int i = 0; i < n; i++) {
        int a, b;
        cin >> a >> b;
        movies[i].push_back(a);
        movies[i].push_back(b);
    }
    
    sort(movies.begin(), movies.end(), [](const pair<int,int>& a, const pair<int,int>& b) {
        return a.second < b.second;
    });

    int end = movies[0][1];
    int nbr = 0;
    for (int i = 1; i < n; i++) {
        if (movies[i][0] >= end) {
            end = movies[i][1];
        } else {
            nbr++;
        }
    }
    cout << n - nbr;
    return 0;
}