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.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.FileNotFoundException;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in Actual solution is at the top
 *
 * @author MaxHeap
 */
public class Main {

  public static void main(String[] args) {
    InputStream inputStream = System.in;
    OutputStream outputStream = System.out;
    InputReader in = new InputReader(inputStream);
    PrintWriter out = new PrintWriter(outputStream);
    CLoseIt solver = new CLoseIt();
    solver.solve(1, in, out);
    out.close();
  }

  static class CLoseIt {

    final int[] seq = {4, 8, 15, 16, 23, 42};

    int indexOf(int value) {
      for (int i = 0; i < seq.length; ++i) {
        if (value == seq[i]) {
          return i;
        }
      }
      throw new RuntimeException();
    }

    public void solve(int testNumber, InputReader in, PrintWriter out) {
      int n = in.nextInt();
      int[] arr = new int[n];
      int[] count = new int[6];
      for (int i = 0; i < n; ++i) {
        arr[i] = in.nextInt();
      }
      int take = 0;
      for (int i = 0; i < n; ++i) {
        int index = indexOf(arr[i]);
        if (index == 0) {
          ++count[0];
        } else {
          if (count[index - 1] > 0) {
            count[index - 1]--;
            count[index]++;
          } else {
            ++take;
          }
        }
      }
      for (int i = 1; i < 6; ++i) {
        take += count[i - 1] * i;
      }
      out.println(take);
    }

  }

  static final class InputReader {

    private final BufferedReader reader;
    private StringTokenizer st;

    public InputReader() {
      reader = new BufferedReader(new InputStreamReader(
          new BufferedInputStream(System.in, 1 << 16)
      ));
      st = null;
    }

    public InputReader(InputStream in) {
      reader = new BufferedReader(new InputStreamReader(
          new BufferedInputStream(in, 1 << 16)
      ));
      st = null;
    }

    public InputReader(String filePath) {
      try {
        reader = new BufferedReader(new FileReader(filePath));
      } catch (FileNotFoundException e) {
        throw new RuntimeException(e);
      }
      st = null;
    }

    public String next() {
      while (st == null || !st.hasMoreTokens()) {
        try {
          st = new StringTokenizer(reader.readLine());
        } catch (IOException e) {
          throw new RuntimeException(e);
        }
      }
      return st.nextToken();
    }

    public int nextInt() {
      return Integer.parseInt(next());
    }

  }
}

