func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     vector<int> arr(n);     for (int i = 0; i < n; ++i) cin >> arr[i];     sort(arr.begin(), arr.end());     int i = 0, j = n - 1;     vector<int> left;     vector<int> right;     while (i <= j) {       right.push_back(arr[j--]);       left.push_back(arr[i++]);     }     if ((arr.size() & 1) == 1) left.erase(left.begin() + left.size() - 1);     int k = right.size() - 1;     cout << k <<   n ;     int p = 0;     for (int i = 0; i < right.size(); i++) {       cout << right[i] <<    ;       if (p < left.size()) cout << left[p++] <<    ;     }     return 0;   }   