func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int tc;     cin >> tc;     while (tc--) {       long long int n, k;       cin >> n >> k;       long long int a[n], m = INT_MIN;       for (long long int i = 0; i < n; i++) {         cin >> a[i];         m = max(m, a[i]);       }       long long int ans[n];       if (k & 1) {         for (long long int i = 0; i < n; i++) cout << m - a[i] <<    ;       } else {         long long int d = INT_MIN;         for (long long int i = 0; i < n; i++) {           a[i] = m - a[i];           d = max(d, a[i]);         }         for (long long int i = 0; i < n; i++) cout << d - a[i] <<    ;       }       cout << endl;     }     return 0;   }   