func_code_string: #include <bits/stdc++.h>   #define pb push_back   #define mp make_pair   #define ll long long   #define mod 1000000007   using namespace std;   void factorial(ll int *fact)   {    fact[0]=1;       for(ll int i=1;i<=200000;i++)       {        fact[i]=(fact[i-1]*i)%mod;    }   }   int main()    {      int t=1;      cin>>t;      ll int fact[200001];      factorial(fact);      while(t--)      {       ll int n;     cin>>n;     ll int i,j,a[n];     ll int mi=INT_MAX;     for(i=0;i<n;i++)     {      cin>>a[i];      mi=min(mi,a[i]);     }     ll int c=0;     ll int an=mi;     for(i=0;i<n;i++)     {      if(a[i]==mi)      c++;      an=an&a[i];     }     if(an!=mi && c>=2)     {      cout<<0<<endl;     }     else     {      cout<<((((((c*(c-1))/2)%mod)*fact[n-2])%mod)*2)%mod<<endl;     }    }   }