func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(nullptr);     cout.tie(nullptr);     int n, k, num = 0;     cin >> n >> k;     vector<pair<int, int> > a(n);     for (int i = 0; i < n; i++) {       cin >> a[i].first >> a[i].second;       a[i].first = -a[i].first;     }     (sort(a.begin(), a.end()));     int fi = a[k - 1].first, sec = a[k - 1].second;     for (int i = 0; i < n; i++) {       if (fi == a[i].first && sec == a[i].second) {         num++;       }     }     cout << num;   }   