func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     FILE *inF, *outF;     inF = fopen( in ,  r );     outF = fopen( out ,  w );     inF = stdin;     outF = stdout;     int t;     fscanf(inF,  %d , &t);     while (t--) {       int n;       long long k;       fscanf(inF,  %d %lld , &n, &k);       int m = -1e9 - 1;       int arr[200000];       for (int i = 0; i < n; i++) {         fscanf(inF,  %d , &arr[i]);         m = max(m, arr[i]);       }       int nm = -1e9 - 1;       for (int i = 0; i < n; i++) {         arr[i] = m - arr[i];         nm = max(nm, arr[i]);       }       if (k % 2 == 0) {         for (int i = 0; i < n; i++) {           arr[i] = nm - arr[i];         }       }       for (int i = 0; i < n; i++) {         fprintf(outF,  %d  , arr[i]);       }       fprintf(outF,   n );     }     return 0;   }   