You are given an array a consisting of n integers. Each a_i is one of the six following numbers: 4, 8, 15, 16, 23, 42.

Your task is to remove the minimum number of elements to make this array good.

An array of length k is called good if k is divisible by 6 and it is possible to split it into k/6 subsequences 4, 8, 15, 16, 23, 42.

Examples of good arrays:

  * [4, 8, 15, 16, 23, 42] (the whole array is a required sequence); 
  * [4, 8, 4, 15, 16, 8, 23, 15, 16, 42, 23, 42] (the first sequence is formed from first, second, fourth, fifth, seventh and tenth elements and the second one is formed from remaining elements); 
  * [] (the empty array is good). 



Examples of bad arrays: 

  * [4, 8, 15, 16, 42, 23] (the order of elements should be exactly 4, 8, 15, 16, 23, 42); 
  * [4, 8, 15, 16, 23, 42, 4] (the length of the array is not divisible by 6); 
  * [4, 8, 15, 16, 23, 42, 4, 8, 15, 16, 23, 23] (the first sequence can be formed from first six elements but the remaining array cannot form the required sequence). 

Input

The first line of the input contains one integer n (1 ≤ n ≤ 5 ⋅ 10^5) — the number of elements in a.

The second line of the input contains n integers a_1, a_2, ..., a_n (each a_i is one of the following numbers: 4, 8, 15, 16, 23, 42), where a_i is the i-th element of a.

Output

Print one integer — the minimum number of elements you have to remove to obtain a good array.

Examples

Input


5
4 8 15 16 23


Output


5


Input


12
4 8 4 15 16 8 23 15 16 42 23 42


Output


0


Input


15
4 8 4 8 15 16 8 16 23 15 16 4 42 23 42


Output


3
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.stream.Stream;

/**
 * @author madi.sagimbekov
 */
public class C1176C {

    private static BufferedReader in;
    private static BufferedWriter out;

    private static List<Integer>[] list;
    private static int[] arr;
    private static int[][] dir = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
    private static boolean[] used;

    public static void main(String[] args) throws IOException {
        open();

        int n = readInt();
        arr = readInts();

        Map<Integer, Integer> map = new HashMap<>();
        //4,8,15,16,23,42
        map.put(4, 1);
        map.put(8, 2);
        map.put(15, 3);
        map.put(16, 4);
        map.put(23, 5);
        map.put(42, 6);
        Map<Integer, Queue<Integer>> mapQueue = new HashMap<>();
        int total = 0;

        for (int i = 0; i < n; i++) {
            if (map.containsKey(arr[i])) {
                int key = map.get(arr[i]);
                if (!mapQueue.containsKey(key)) {
                    mapQueue.put(key, new LinkedList<>());
                }
                mapQueue.get(key).add(i);
            }
        }

        boolean br = false;
        while (!br) {
            br = false;
            int last = -1;
            for (int i = 1; i <= 6; i++) {
                Queue<Integer> queue = mapQueue.get(i);
                if (queue == null || queue.isEmpty()) {
                    br = true;
                    break;
                } else {
                    boolean found = false;
                    while (!queue.isEmpty()) {
                        int next = queue.remove();
                        if (next > last) {
                            last = next;
                            found = true;
                            break;
                        }
                    }
                    if (!found) {
                        br = true;
                    }
                }
            }
            if (!br) {
                total++;
            }
        }

        out.write((n - total * 6) + "\n");

        close();
    }

    private static int[] readInts() throws IOException {
        return Stream.of(in.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }

    private static int readInt() throws IOException {
        return Integer.parseInt(in.readLine());
    }

    private static long[] readLongs() throws IOException {
        return Stream.of(in.readLine().split(" ")).mapToLong(Long::parseLong).toArray();
    }

    private static long readLong() throws IOException {
        return Long.parseLong(in.readLine());
    }

    private static double[] readDoubles() throws IOException {
        return Stream.of(in.readLine().split(" ")).mapToDouble(Double::parseDouble).toArray();
    }

    private static double readDouble() throws IOException {
        return Double.parseDouble(in.readLine());
    }

    private static String readString() throws IOException {
        return in.readLine();
    }

    private static List<Integer>[] buildAdjacencyList(int n, int m) throws IOException {
        List<Integer>[] list = new ArrayList[n + 1];
        for (int i = 0; i <= n; i++) {
            list[i] = new ArrayList<>();
        }

        for (int i = 0; i < m; i++) {
            int[] e = readInts();
            list[e[0]].add(e[1]);
            list[e[1]].add(e[0]);
        }

        return list;
    }

    private static void open() {
        in = new BufferedReader(new InputStreamReader(System.in));
        out = new BufferedWriter(new OutputStreamWriter((System.out)));
    }

    private static void close() throws IOException {
        out.flush();
        out.close();
        in.close();
    }

}
