func_code_string: #include <bits/stdc++.h>   using namespace std;   long long _pow(long long base, long long exp) {     return exp == 0 ? 1 : base * _pow(base, exp - 1);   }   string int_to_str(int x) {     string xs;     stringstream ss;     ss << x;     xs = ss.str();     return xs;   }   int str_vec_find(string x, vector<string> y) {     vector<string>::iterator it;     it = find(y.begin(), y.end(), x);     int pos = distance(y.begin(), it);     return pos;   }   int main() {     long long temp, tempa, tempb, maxa, maxb;     vector<long long> a, b;     int n;     cin >> n;     maxa = maxb = -1;     for (int i = 0; i < n; i++) {       cin >> tempa >> tempb;       if (tempa >= maxa) maxa = tempa;       if (tempb >= maxb) maxb = tempb;       a.push_back(tempa);       b.push_back(tempb);     }     for (int w = 0; w < b.size(); w++) {       for (int r = 0; r < b.size() - 1; r++) {         if (a[r] > a[r + 1]) {           temp = a[r];           a[r] = a[r + 1];           a[r + 1] = temp;           temp = b[r];           b[r] = b[r + 1];           b[r + 1] = temp;         }       }     }     if (n == 1)       cout << maxb << endl;     else {       long long stamp = b[0];       for (int i = 1; i < n; i++) {         if (b[i] >= stamp)           stamp = b[i];         else {           if (a[i] != a[i - 1]) stamp = a[i];         }       }       cout << stamp << endl;     }     return 0;   }   