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
sample = [4, 8, 15, 16, 23, 42]

n = int(input())
a = list(map(int, input().split()))

last_digit = {}

to_delete = 0

for item in a:
	if item == 4:
		if item in last_digit:
			last_digit[item] += 1
		else:
			last_digit[item] = 1
	else:
		prev = sample[sample.index(item) - 1]
		if prev in last_digit and last_digit[prev] > 0:
			last_digit[prev] -= 1
			if item in last_digit:
				last_digit[item] += 1
			else:
				last_digit[item] = 1
		else:
			to_delete += 1
			# print('lost meanwhile: ', item)

# print('lost meanwhile total: ', to_delete)
# print('last_digit: ', last_digit)

for key in last_digit.keys():
	if key != 42:
		to_delete += last_digit[key] * (sample.index(key) + 1)
print(to_delete)
