#include<fstream>

using namespace std;

ifstream f("cutii.in");
ofstream g("cutii.out");

#define cmax 350000

int n,t,m,maxim;

struct punct
{
    int x;
    int y;
    int z;
};
punct p[cmax],w[cmax];

void interc (int l, int m, int r)
{
    int k=l-1;
    int i=l;
    int j=m+1;
    while(i<=m && j<=r)
    {
        if(p[i].x<p[j].x && p[i].y<p[j].y && p[i].z<p[j].z)
        {
            k++;
            w[k]=p[i];
            i++;
        }
        else
        {
            k++;
            w[k]=p[j];
            j++;
        }
    }
    while(i<=m)
    {
        k++;
        w[k]=p[i];
        i++;
    }
    while(j<=r)
    {
        k++;
        w[k]=p[j];
        j++;
    }
    for(i=l;i<=r;i++)
        p[i]=w[i];
}

void MergeSort (int l, int r)
{
    if(l==r)
        return;
    int mij=(l+r)/2;
    MergeSort (l,mij);
    MergeSort (mij+1,r);
    interc (l,mij,r);
}

int main ()
{
    int i;
    f>>n;
    f>>t;
    for(i=1;i<=n*t;i++)
    {
        f>>p[i].x;
        f>>p[i].y;
        f>>p[i].z;
        if(i%n==0)
            MergeSort(i-n+1,i);
    }
    maxim=0;
    m=1;
    for(i=1;i<=n*t;i++)
    {
        if(p[i].x<p[i+1].x && p[i].y<p[i+1].y && p[i].z<p[i+1].z)
            m++;
        else
        {
            if(m>=maxim)
                maxim=m;
            m=1;
        }
        if(i%n==0)
        {
            g<<maxim<<"\n";
            maxim=0;
            m=1;
        }
    }
    f.close();g.close();
    return 0;
}