func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       long long n, k;       cin >> n >> k;       long long arr[n], arr1[n], arr2[n];       long long F1 = INT_MIN, F2 = INT_MIN;       for (int i = 0; i < n; ++i) {         cin >> arr[i];         F1 = max(F1, arr[i]);       }       for (int i = 0; i < n; ++i) {         arr1[i] = F1 - arr[i];         F2 = max(F2, arr1[i]);       }       for (int i = 0; i < n; ++i) {         arr2[i] = F2 - arr1[i];       }       if ((k - 1) & 1) {         for (int i = 0; i < n; ++i) {           cout << arr2[i] <<    ;         }       } else {         for (int i = 0; i < n; ++i) {           cout << arr1[i] <<    ;         }       }       cout << endl;     }     return 0;   }   