func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n, i, c = 0, j = 0, index[3], sum = 0, avg;     cin >> n;     long long int a[n];     for (i = 0; i < n; i++) {       cin >> a[i];       sum += a[i];     }     avg = sum / n;     if (avg * n != sum)       cout <<  Unrecoverable configuration. ;     else {       for (i = 0; i < n; i++) {         if (a[i] == avg)           c++;         else {           index[j] = i;           j++;         }         if (j == 3) break;       }       if (c == n)         cout <<  Exemplary pages. ;       else if (c == n - 2) {         if (a[index[1]] > a[index[0]])           cout << (a[index[1]] - a[index[0]]) / 2 <<   ml. from cup #                 << index[0] + 1 <<   to cup #  << index[1] + 1 <<  . ;         else           cout << (a[index[0]] - a[index[1]]) / 2 <<   ml. from cup #                 << index[1] + 1 <<   to cup #  << index[0] + 1 <<  . ;       } else         cout <<  Unrecoverable configuration. ;     }     return 0;   }   