func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<pair<int, int>> vec;   int main() {     int n;     cin >> n;     for (int tt = 0; tt < n; tt++) {       int x, y;       cin >> x >> y;       vec.push_back({x, y});     }     sort(vec.begin(), vec.end());     int ans = -1;     for (int i = 0; i < n; i++) {       if (ans <= vec[i].second)         ans = vec[i].second;       else         ans = vec[i].first;     }     cout << ans << endl;   }   