TEMP

package com.company;

import java.util.HashSet;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int m = scan.nextInt();

        HashSet<Integer> set = new HashSet<Integer>();
        int[][] arr = new int[n][m];
        String s = scan.nextLine();//перевод строки надо считать
        for (int i = 0; i < n; i++) {
            s = scan.nextLine();
            for (int j = 0; j < m; j++) {
                arr[i][j] = (int)(s.charAt(j) - '0');
            }
        }
        for (int i = 0; i < m; i++) {
            int max = 0;
            for (int j = 0; j < n; j++) {
                if (arr[j][i] >= max) {
                    max = arr[j][i];
                }
            }
            for (int j = 0; j < n; j++) {
                if (arr[j][i] == max) {
                    set.add(j);
                }
            }
        }
        System.out.print(set.size());
    }
}