func_code_string: #include <bits/stdc++.h>   using namespace std;   long long arr[1000007];   long long cs[1000007];   long long ps[1000007];   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       for (int i = 1; i <= n; i++) cin >> arr[i];       for (int i = 1; i <= n; i++) {         if (i % 2) {           if (arr[i] > 0)             cout << -1 * arr[i] <<    ;           else             cout << arr[i] <<    ;         } else {           if (arr[i] < 0)             cout << -1 * arr[i] <<    ;           else             cout << arr[i] <<    ;         }       }       cout << endl;     }     return 0;   }   