func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     int n, k, i, tt = 1, a, b;     cin >> n >> k;     vector<pair<int, int> > p;     for (i = 0; i < n; i++) {       cin >> a >> b;       p.push_back(make_pair(-a, b));     }     sort(p.begin(), p.end());     for (i = k - 1; i < n - 1; i++) {       if (p[i].first == p[i + 1].first && p[i].second == p[i + 1].second)         tt += 1;       else         break;     }     for (i = k - 1; i > 0; i--) {       if (p[i].first == p[i - 1].first && p[i].second == p[i - 1].second)         tt += 1;       else         break;     }     cout << tt;   }   