#include <fstream>

using namespace std;
ifstream fin("cutii.in");
ofstream fout("cutii.out");
int main()
{
    int n,t,i,j,k,aux,a[3501]={0},nr,x,y,z;
    fin>>n>>t;
    for(k=1;k<=t;k++)
    {
        nr=1;
        for(i=1;i<=n;i++)
        {
            fin>>x>>y>>z;
            a[i]=x*100+y*10+z;
        }
        for(i=1;i<=n-1;i++)
        {
            for(j=i+1;j<=n;j++)
            {
                if((a[i]/100<a[j]/100)&&(a[i]/10%10<a[j]/10%10)&&(a[i]%10<a[j]%10))
                {
                    aux=a[i];
                    a[i]=a[j];
                    a[j]=aux;
                }
            }

        }
        for(i=1;i<=n-1;i++)
            {if((a[i]/100>a[i+1]/100)&&(a[i]/10%10>a[i+1]/10%10)&&(a[i]%10>a[i+1]%10))nr++;}
        fout<<nr<<endl;
    }
    return 0;
}