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
#Imports
from collections import defaultdict as dc
import sys
import math
mod=10**9 +7
# How to sort a list using two compare :
# instead of defining a function define class as a key
# class key(str):
#     def __lt__(x,y):#         return int(x+y)>int(y+x)

def sinp():
    p=str(sys.stdin.readline())
    return p

def seive(n):
    p=[0]*(n+1)
    for i in range(2,n):           
        for j in range(2*i,n+1,i):
                p[i]=1
    return p


def inp(): 
    p=int(sys.stdin.readline())
    return p

def line():
    p=list(map(int,sys.stdin.readline().split()))
    return p

def read_mat():
    n=inp()
    a=[]
    for i in range(n):
        a.append(line())
    return a

def ind(a):
    return ord(a)-ord('A')

def solve(t):
    n=inp()
    a=line()
    p={}
    p[4]=0
    p[8]=0
    p[15]=0
    p[16]=0
    p[23]=0
    p[42]=0
    for i in range(n):
        if a[i]==4:
            p[4]+=1
        elif a[i]==8:
            if p[4]>0:
                p[4]-=1
                p[8]+=1
        elif a[i]==15:
            if p[8]>0:
                p[8]-=1
                p[15]+=1
        elif a[i]==16:
            if p[15]>0:
                p[15]-=1
                p[16]+=1
        elif a[i]==23:
            if p[16]>0:
                p[23]+=1
                p[16]-=1
        else:
            if p[23]>0:
                p[23]-=1
                p[42]+=1
    print(n - 6*p[42])


t=1
# t=inp()
for _ in range(t):
    solve(t)