func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     long a[1000];     cin >> n;     cin >> a[0];     long max = a[0], min = a[0];     for (int i = 1; i < n; i++) {       cin >> a[i];       if (a[i] > max) {         max = a[i];       } else if (a[i] < min) {         min = a[i];       }     }     cout << max - min - (n - 1);     return 0;   }   