func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int powOfPositive(long long int n) {     long long int pos = floor(log2(n));     return pos;   }   int main() {     long long int t;     cin >> t;     while (t--) {       long long int n;       cin >> n;       vector<long long int> arr(n);       for (long long int i = 0; i < n; i++) {         cin >> arr[i];       }       vector<long long int> dp(30, 0);       long long int ans = 0;       for (long long int i = 0; i < n; i++) {         if (arr[i] == 1) {           dp[0]++;           continue;         }         long long int x = powOfPositive(arr[i]);         dp[x]++;       }       for (long long int i = 0; i < 30; i++) {         if (dp[i] > 0) {           ans += ((dp[i]) * (dp[i] - 1)) / 2;         }       }       cout << ans << endl;     }     return 0;   }   