func_code_string: #include <bits/stdc++.h>   const double EPS = 1e-10;   const double PI = acos(-1.0);   using namespace std;   int main(void) {     int n;     cin >> n;     vector<pair<int, int> > e;     for (int i = (0); i < (n); ++i) {       int a, b;       cin >> a >> b;       e.push_back(make_pair(a, b));     }     sort((e).begin(), (e).end());     int answer = 0;     for (int i = (0); i < (n); ++i) {       if (answer <= e[i].second)         answer = e[i].second;       else         answer = e[i].first;     }     cout << answer << endl;     return 0;   }   