//
//  main.cpp
//  XOR Clique
//
//  Created by SkyWave Sun on 2023/9/2.
//

#include <iostream>
#include <cmath>
#include <set>
#include <map>
using namespace std;
#define N (int)1e5 + 1
int a[N];
int main(int argc, const char * argv[]) {
    int T;
    scanf("%d", &T);
    while (T--) {
        int n;
        scanf("%d", &n);
        map<int, int> mp;
        for (int i = 1; i <= n; ++i) {
            scanf("%d", &a[i]);
            ++mp[(int)log2(a[i])];
        }
        int ans = INT_MIN;
        for (auto &i : mp) {
            ans = max(ans, i.second);
        }
        printf("%d\n", ans);
    }
    return 0;
}

answer.code: In function ‘int main(int, const char**)’:
answer.code:26:19: error: ‘INT_MIN’ was not declared in this scope
   26 |         int ans = INT_MIN;
      |                   ^~~~~~~
answer.code:12:1: note: ‘INT_MIN’ is defined in header ‘<climits>’; did you forget to ‘#include <climits>’?
   11 | #include <map>
  +++ |+#include <climits>
   12 | using namespace std;
answer.code:17:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   17 |     scanf("%d", &T);
      |     ~~~~~^~~~~~~~~~
answer.code:20:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   20 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
answer.code:23:18: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   23 |             scanf("%d", &a[i]);
      |             ~~~~~^~~~~~~~~~~~~