func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int N;     while (1 == scanf( %d , &N)) {       vector<int> A(N);       for (int i = 0; i < (int)(N); i++) scanf( %d , &A[i]);       sort((A).begin(), (A).end());       int need_to_fill = 0, need_to_move = 0;       for (int i = 0; i < (int)(N); i++) need_to_fill += max(0, 3 - A[i]);       int total = accumulate((A).begin(), (A).end(), 0);       sort((A).begin(), (A).end());       int ans = INT_MAX;       for (int i = 0; i < (int)(N); i++) {         int num_rooms = N - i;         if (4 * num_rooms >= total && 3 * num_rooms <= total) {           int tmp = max(need_to_move, need_to_fill);           ans = min(ans, tmp);         }         need_to_fill -= max(0, 3 - A[i]);         need_to_move += A[i];       }       if (ans == INT_MAX)         puts( -1 );       else         printf( %d n , ans);     }   }   