func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, k;     cin >> n >> k;     vector<pair<int, int> > v;     while (n--) {       int x, y;       cin >> x >> y;       v.push_back(make_pair(-x, y));     }     sort(v.begin(), v.end());     int ind = k - 1;     int res = 1;     while (ind - 1 >= 0 && v[ind] == v[ind - 1]) {       ind--;       res++;     }     ind = k - 1;     while (ind + 1 < v.size() && v[ind] == v[ind + 1]) {       ind++;       res++;     }     cout << res << endl;     return 0;   }   