func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     vector<int> v, v1;     for (int i = 0; i < n; i++) {       int t, y;       cin >> t >> y;       v.push_back(t);       v1.push_back(y);     }     sort(v.begin(), v.end());     sort(v1.begin(), v1.end());     long long ans = n;     for (int i = 0; i < n; i++) {       ans += max(v[i], v1[i]);     }     cout << ans;   }   