#include <iostream>
#include <vector>

using namespace std;

int main() {
    //freopen("test.txt","r",stdin);
    int N, K;
    cin >> N >> K;
    
    vector<vector<int>> S(N, vector<int>(K));
    
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < K; j++) {
            cin >> S[i][j];
        }
    }
    
    int count = 0;
    

    for (int x = 0; x < N; x++) {
        for (int y = 0; y < N; y++) {
            if (x == y) continue;
            bool dominated = true;
            
            for (int k = 0; k < K; k++) {
                if (S[x][k] > S[y][k]) {
                    dominated = false;
                    break;
                }
            }
            
            if (dominated) {
                count++;
                break; 
            }
        }
    }
    
    cout << count << endl;
    return 0;
}