[백준] 3052번 나머지

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

public class Main {
	public static void main(String[] args) {
		
		Scanner kb = new Scanner(System.in);
		HashSet<Integer> set = new HashSet<>();
		
		for(int i=0; i<10; i++) {
			set.add(kb.nextInt()%42);
		}
		
		System.out.println(set.size());
		


	}
}