func_code_string: #include <bits/stdc++.h>   using namespace std;   int max(long long int arr[], long long int n) {     int m = INT_MIN;     for (int i = 0; i < n; i++) {       if (arr[i] > m) {         m = arr[i];       }     }     return (m);   }   void display(long long int arr[], long long int n) {     for (int i = 0; i < n; i++) {       cout << arr[i] <<    ;     }   }   int main() {     int t;     cin >> t;     while (t--) {       long long int n, k;       cin >> n >> k;       long long int arr[n];       for (int i = 0; i < n; i++) {         cin >> arr[i];       }       int m = max(arr, n);       for (int i = 0; i < n; i++) {         long long int a = m - arr[i];         arr[i] = a;       }       if (k % 2 == 0) {         m = max(arr, n);         for (int i = 0; i < n; i++) {           long long int a = m - arr[i];           arr[i] = a;         }         display(arr, n);       } else {         display(arr, n);       }       cout << endl;     }     return (0);   }   