import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Map map = new HashMap<Integer, Integer>();
        for (int i = 0; i < 10; i++) {
            int num = sc.nextInt();
            map.put(num%42,((int)map.getOrDefault(num%42,0)+1));
        }
        System.out.println(map.size());
    }
}