3052 : 나머지

import java.util.ArrayList;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int[] arr = new int[10];
		ArrayList<Integer> arr1 = new ArrayList<>();
		int cnt = 10;

		for (int i = 0; i < 10; i++) {
			arr[i] = sc.nextInt();
			arr1.add(arr[i] % 42);
		}

		for (int j = 0; j < arr1.size(); j++) {
			for (int k = j+1; k < arr1.size(); k++) {
				if (arr1.get(j) == arr1.get(k)) {
					arr1.remove(k);
					k--;
				}
					
			}
		}
		System.out.println(arr1.size());
	}
}