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#include<bits/stdc++.h>
#define int long long int
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define F first
#define S second
#define inf 1e18
#define vec vector<int>
#define pii pair<int,int>
using namespace std;
int msb(int n)
{
  n |= n >> 1;
 
  n |= n >> 2;
 
  n |= n >> 4;
  n |= n >> 8;
  n |= n >> 16;
  n |= n >> 32;
  n = n + 1;
  return log2((n >> 1));
}
int pw[100];
void power()
{
  pw[0] = 1;
  for (int i = 1; i < 64; i++)
    pw[i] = pw[i - 1] * 2;
}
int32_t main()
{
#ifndef ONLINE_JUDGE
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
#endif // ONLINE_JUDGE  
  ios_base::sync_with_stdio(NULL);
  cin.tie(NULL);
  cout.tie(NULL);
  int tt = 1;
  cin >> tt;
  while (tt--)
  {
    int n;
    cin >> n;
    int a[n + 1], i;
    for (i = 1; i <= n; i++)
      cin >> a[i];
    int b[100] = {0}, sum = 0;
    for (i = 1; i <= n; i++)
    {
      int x = a[i], j = 0;
      sum += a[i];
      while (x > 0)
      {
        b[j] += (x & 1);
        x >>= 1;
        j++;
      }
    }
    power();
    int c[100] = {0}, q = msb(sum);
    for (i = 0; i <= 64; i++)
    {
      if (!b[i])
        continue;
      c[i] = 1;
      int y = log2(b[i]);
      for (int j = i; j <= i + y; j++)
        b[j]++;
    }
    int ans = 0;
    for (i = 0; i <= 63; i++)
      if (c[i])
        ans += pw[i];
    cout << ans << "\n";
  }
}

Main.java:1: error: illegal character: '#'
#include<bits/stdc++.h>
^
Main.java:1: error: class, interface, or enum expected
#include<bits/stdc++.h>
        ^
Main.java:2: error: illegal character: '#'
#define int long long int
^
Main.java:3: error: illegal character: '#'
#define pb push_back
^
Main.java:4: error: illegal character: '#'
#define ppb pop_back
^
Main.java:5: error: illegal character: '#'
#define pf push_front
^
Main.java:6: error: illegal character: '#'
#define ppf pop_front
^
Main.java:7: error: illegal character: '#'
#define F first
^
Main.java:8: error: illegal character: '#'
#define S second
^
Main.java:9: error: illegal character: '#'
#define inf 1e18
^
Main.java:10: error: illegal character: '#'
#define vec vector<int>
^
Main.java:11: error: illegal character: '#'
#define pii pair<int,int>
^
Main.java:13: error: class, interface, or enum expected
int msb(int n)
^
Main.java:17: error: class, interface, or enum expected
  n |= n >> 2;
  ^
Main.java:19: error: class, interface, or enum expected
  n |= n >> 4;
  ^
Main.java:20: error: class, interface, or enum expected
  n |= n >> 8;
  ^
Main.java:21: error: class, interface, or enum expected
  n |= n >> 16;
  ^
Main.java:22: error: class, interface, or enum expected
  n |= n >> 32;
  ^
Main.java:23: error: class, interface, or enum expected
  n = n + 1;
  ^
Main.java:24: error: class, interface, or enum expected
  return log2((n >> 1));
  ^
Main.java:25: error: class, interface, or enum expected
}
^
Main.java:27: error: class, interface, or enum expected
void power()
^
Main.java:30: error: class, interface, or enum expected
  for (int i = 1; i < 64; i++)
  ^
Main.java:30: error: class, interface, or enum expected
  for (int i = 1; i < 64; i++)
                  ^
Main.java:30: error: class, interface, or enum expected
  for (int i = 1; i < 64; i++)
                          ^
Main.java:32: error: class, interface, or enum expected
}
^
Main.java:35: error: illegal character: '#'
#ifndef ONLINE_JUDGE
^
Main.java:37: error: class, interface, or enum expected
  freopen("output.txt", "w", stdout);
  ^
Main.java:38: error: illegal character: '#'
#endif // ONLINE_JUDGE  
^
Main.java:39: error: class, interface, or enum expected
  ios_base::sync_with_stdio(NULL);
  ^
Main.java:40: error: class, interface, or enum expected
  cin.tie(NULL);
  ^
Main.java:41: error: class, interface, or enum expected
  cout.tie(NULL);
  ^
Main.java:42: error: class, interface, or enum expected
  int tt = 1;
  ^
Main.java:43: error: class, interface, or enum expected
  cin >> tt;
  ^
Main.java:44: error: class, interface, or enum expected
  while (tt--)
  ^
Main.java:47: error: class, interface, or enum expected
    cin >> n;
    ^
Main.java:48: error: class, interface, or enum expected
    int a[n + 1], i;
    ^
Main.java:49: error: class, interface, or enum expected
    for (i = 1; i <= n; i++)
    ^
Main.java:49: error: class, interface, or enum expected
    for (i = 1; i <= n; i++)
                ^
Main.java:49: error: class, interface, or enum expected
    for (i = 1; i <= n; i++)
                        ^
Main.java:51: error: class, interface, or enum expected
    int b[100] = {0}, sum = 0;
    ^
Main.java:52: error: class, interface, or enum expected
    for (i = 1; i <= n; i++)
    ^
Main.java:52: error: class, interface, or enum expected
    for (i = 1; i <= n; i++)
                ^
Main.java:52: error: class, interface, or enum expected
    for (i = 1; i <= n; i++)
                        ^
Main.java:55: error: class, interface, or enum expected
      sum += a[i];
      ^
Main.java:56: error: class, interface, or enum expected
      while (x > 0)
      ^
Main.java:59: error: class, interface, or enum expected
        x >>= 1;
        ^
Main.java:60: error: class, interface, or enum expected
        j++;
        ^
Main.java:61: error: class, interface, or enum expected
      }
      ^
Main.java:64: error: class, interface, or enum expected
    int c[100] = {0}, q = msb(sum);
    ^
Main.java:65: error: class, interface, or enum expected
    for (i = 0; i <= 64; i++)
    ^
Main.java:65: error: class, interface, or enum expected
    for (i = 0; i <= 64; i++)
                ^
Main.java:65: error: class, interface, or enum expected
    for (i = 0; i <= 64; i++)
                         ^
Main.java:69: error: class, interface, or enum expected
      c[i] = 1;
      ^
Main.java:70: error: class, interface, or enum expected
      int y = log2(b[i]);
      ^
Main.java:71: error: class, interface, or enum expected
      for (int j = i; j <= i + y; j++)
      ^
Main.java:71: error: class, interface, or enum expected
      for (int j = i; j <= i + y; j++)
                      ^
Main.java:71: error: class, interface, or enum expected
      for (int j = i; j <= i + y; j++)
                                  ^
Main.java:73: error: class, interface, or enum expected
    }
    ^
Main.java:75: error: class, interface, or enum expected
    for (i = 0; i <= 63; i++)
    ^
Main.java:75: error: class, interface, or enum expected
    for (i = 0; i <= 63; i++)
                ^
Main.java:75: error: class, interface, or enum expected
    for (i = 0; i <= 63; i++)
                         ^
Main.java:78: error: class, interface, or enum expected
    cout << ans << "\n";
    ^
Main.java:79: error: class, interface, or enum expected
  }
  ^
64 errors

Standard output is empty