#include <bits/stdc++.h>   using namespace std;   int main() {     int n, i, c, d, cnt1, cnt2;     cin >> n;     pair<int, int> date[n];     for (i = 0; i < n; i++) {       cin >> date[i].first >> date[i].second;     }     sort(date, date + n);     c = date[0].first;     d = date[0].second;     if (c <= d)       cnt1 = c;     else       cnt1 = d;     for (i = 0; i < n; i++) {       c = date[i].first;       d = date[i].second;       if (c <= d)         cnt2 = c;       else         cnt2 = d;       if (cnt1 <= cnt2)         cnt1 = cnt2;       else         cnt1 = c;     }     cout << cnt1;   }   