#include <cstdio>
#include <algorithm>

#define DIM 3600
#define x first
#define y second.first
#define z second.second
using namespace std;

int N, T, D[DIM];
pair <int, pair <int, int> > Size[DIM];

class InputReader {
    public:
        InputReader() {}
        InputReader(const char *file_name) {
            input_file = fopen(file_name, "r");
            cursor = 0;
            fread(buffer, SIZE, 1, input_file);
        }
        inline InputReader &operator >>(int &n) {
            while(buffer[cursor] < '0' || buffer[cursor] > '9') {
                advance();
            }
            n = 0;
            while('0' <= buffer[cursor] && buffer[cursor] <= '9') {
                n = n * 10 + buffer[cursor] - '0';
                advance();
            }
            return *this;
        }
    private:
        FILE *input_file;
        static const int SIZE = 1 << 17;
        int cursor;
        char buffer[SIZE];
        inline void advance() {
            ++ cursor;
            if(cursor == SIZE) {
                cursor = 0;
                fread(buffer, SIZE, 1, input_file);
            }
        }
};

int main ()
{
    InputReader fin ("cutii.in" );
    freopen ("cutii.out","w", stdout);

    fin >> N >> T;

    for (int t = 1; t <= T; t ++)
    {
        for (int i = 1; i <= N; i ++)
        {
            fin >> Size[i].x;
            fin >> Size[i].y;
            fin >> Size[i].z;
        }

        sort (Size + 1, Size + N + 1);

        int maxim = 0;
        for (int i = 1; i <= N; i ++)
        {
            D[i] = 1;
            for (int j = i - 1; j >= 1; j --)
            {
                if (D[j] >= D[i] && Size[i].x > Size[j].x && Size[i].y > Size[j].y && Size[i].z > Size[j].z)
                    D[i] = 1 + D[j];
                if (D[i] == i || D[j] == j)
                    break;
            }

            maxim = max (maxim, D[i]);
        }

        printf ("%d\n", maxim);
    }

    fclose (stdin );
    fclose (stdout);

    return 0;
}