func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n;     cin >> n;     vector<long long> v(2000000);     for (long long i = 0; i < 2000000; i++) v[i] = 0;     for (long long i = 0; i < n; i++) {       long long t1;       cin >> t1;       v[t1]++;     }     long long t = 0;     long long l = 1;     long long r = 1000000;     while (n > 0) {       t++;       l++;       r--;       if (v[l]) n--;       if (v[r]) n--;     }     cout << t;   }   