func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[4000];   int main() {     int n, ans1 = 0, ans2 = 0;     cin >> n;     for (int i = 1; i <= n / 2; ++i) cin >> a[i];     sort(a + 1, a + 1 + n / 2);     for (int i = 1; i <= n / 2; ++i) {       ans1 += abs((i * 2 - 1) - a[i]);       ans2 += abs((i * 2) - a[i]);     }     cout << min(ans1, ans2) << endl;     return 0;   }   