func_code_string: #include <bits/stdc++.h>   using namespace std;   long long t, n, a[100010], b[100010], c[100], w, e;   long long ans = 0;   void init() {     cin >> n;     for (int i = 1; i <= n; i++) cin >> a[i];     for (int i = 1; i <= 90; i++) c[i] = 0;     sort(a + 1, a + n + 1);     w = 1;     for (int i = 1; i <= n; i++) {       while (a[i] > ((1 << w) - 1)) w++;       b[i] = w;       c[w]++;     }     ans = 0;     for (int i = 1; i <= w; i++) ans = ans + (c[i] - 1) * c[i] / 2;     cout << ans << endl;   }   int main() {     cin >> t;     for (int q = 1; q <= t; q++) init();     return 0;   }   