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
def filtra_array(n, array):
    
    div4 = 0
    div8 = 0
    div15 = 0        
    div16 = 0
    div23 = 0
    div42 = 0
        
    for i in range(n):
        if(array[i] == 4):
            div4 += 1
            
        elif(array[i] == 8):
            if div4 >0:
                div4 -= 1
                div8 += 1

        elif(array[i] == 15):
            if div8 > 0:
                div8 -= 1
                div15 += 1

        elif(array[i] == 16):
            if div15 > 0:
                div15 -= 1
                div16 += 1

        elif(array[i] == 23):
            if div16 > 0:
                div16 -= 1
                div23 += 1

        elif(array[i] == 42):
            if div23 > 0:
                div23 -= 1
                div42 += 1
            
    return (n-div42 * 6)
 
n = int(input())
array = list(map(int, input().rstrip().split()))

array_bom = filtra_array(n, array)

print(array_bom)