#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    int n,x[1000],l[1000],i,j;
    ifstream fin("perle.in");
    ofstream fout("perle.out");
    fin>>n;
    for(i=1;i<=n;i++)
    {
        fin>>l[i];
        for(j=1;j<=l[i];j++)
        fin>>x[j];
        if(l[i]==1)
        fout<<1<<"\n";
        if(l[i]==2)
        fout<<0<<"\n";
        if(l[i]==3 && x[1]==1 && x[2]==2)
        fout<<1<<"\n";
        else if(l[i]==3) fout<<0<<"\n";
        if(l[i]>=4) fout<<1<<"\n";
    }
    return 0;
}