func_code_string: #include <bits/stdc++.h>   using namespace std;   int coolness[6001];   int main() {     int n;     while (scanf( %d , &n) != EOF) {       fill(coolness, coolness + 6001, 0);       for (int i = 0; i < n; i++) {         int temp;         scanf( %d , &temp);         coolness[temp]++;       }       int cost = 0;       for (int i = 1; i <= n; i++) {         for (; coolness[i] > 1; coolness[i]--) {           for (int j = i + 1;; j++) {             if (coolness[j] == 0) {               coolness[j]++;               cost += j - i;               break;             }           }         }       }       printf( %d n , cost);     }   }   