Giga Tower is the tallest and deepest building in Cyberland. There are 17 777 777 777 floors, numbered from  - 8 888 888 888 to 8 888 888 888. In particular, there is floor 0 between floor  - 1 and floor 1. Every day, thousands of tourists come to this place to enjoy the wonderful view. 

In Cyberland, it is believed that the number "8" is a lucky number (that's why Giga Tower has 8 888 888 888 floors above the ground), and, an integer is lucky, if and only if its decimal notation contains at least one digit "8". For example, 8, - 180, 808 are all lucky while 42, - 10 are not. In the Giga Tower, if you write code at a floor with lucky floor number, good luck will always be with you (Well, this round is #278, also lucky, huh?).

Tourist Henry goes to the tower to seek good luck. Now he is at the floor numbered a. He wants to find the minimum positive integer b, such that, if he walks b floors higher, he will arrive at a floor with a lucky number. 

Input

The only line of input contains an integer a ( - 109 ≤ a ≤ 109).

Output

Print the minimum b in a line.

Examples

Input

179


Output

1


Input

-1


Output

9


Input

18


Output

10

Note

For the first sample, he has to arrive at the floor numbered 180.

For the second sample, he will arrive at 8.

Note that b should be positive, so the answer for the third sample is 10, not 0.
# pylint: disable=unused-variable
# pylint: enable=too-many-lines
# * Just believe in yourself


# @ Author @CAP
# import numpy
import os
import sys
from io import BytesIO, IOBase
import math as M
import itertools as ITR
from collections import defaultdict as D
from collections import Counter as C
from collections import deque as Q
import threading
from functools import lru_cache, reduce
from functools import cmp_to_key as CMP
from bisect import bisect_left as BL
from bisect import bisect_right as BR
import random as R
import string
import cmath, time

enum = enumerate
start_time = time.time()

# * Variables

MOD = 1_00_00_00_007
MA = float("inf")
MI = float("-inf")

# * Graph 8 direction
di8 = ((1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1), (0, -1), (1, -1))

# * Graph 4 direction
di4 = ((1, 0), (0, 1), (-1, 0), (0, -1))

# * Stack increment


def increase_stack():
    sys.setrecursionlimit(2 ** 32 // 2 - 1)
    threading.stack_size(1 << 27)
    # sys.setrecursionlimit(10**6)
    # threading.stack_size(10**8)
    # t = threading.Thread(target=main)
    # t.start()
    # t.join()


# * Region Funtions


def binary(n):
    return bin(n)[2:]


def decimal(s):
    return int(s, 2)


def pow2(n):
    p = 0
    while n > 1:
        n //= 2
        p += 1
    return p


def maxfactor(n):
    q = []
    for i in range(1, int(n ** 0.5) + 1):
        if n % i == 0:
            q.append(i)
    if q:
        return q[-1]


def factors(n):
    q = []
    for i in range(1, int(n ** 0.5) + 1):
        if n % i == 0:
            q.append(i)
            q.append(n // i)
    return list(sorted(list(set(q))))


def primeFactors(n):
    l = []
    while n % 2 == 0:
        l.append(2)
        n = n / 2
    for i in range(3, int(M.sqrt(n)) + 1, 2):
        while n % i == 0:
            l.append(i)
            n = n / i
    if n > 2:
        l.append(int(n))
    l.sort()
    return l


def isPrime(n):
    if n == 1:
        return False
    else:
        root = int(n ** 0.5)
        root += 1
        for i in range(2, root):
            if n % i == 0:
                return False
        return True


def seive(n):
    a = []
    prime = [True for i in range(n + 1)]
    p = 2
    while p * p <= n:
        if prime[p] == True:
            for i in range(p ** 2, n + 1, p):
                prime[i] = False
        p = p + 1
    for p in range(2, n + 1):
        if prime[p]:
            a.append(p)
    prime[0] = prime[1] = False
    return a, prime


def maxPrimeFactors(n):
    maxPrime = -1
    while n % 2 == 0:
        maxPrime = 2
        n >>= 1
    for i in range(3, int(M.sqrt(n)) + 1, 2):
        while n % i == 0:
            maxPrime = i
            n = n / i
    if n > 2:
        maxPrime = n
    return int(maxPrime)


def countchar(s, i):
    c = 0
    ch = s[i]
    for i in range(i, len(s)):
        if s[i] == ch:
            c += 1
        else:
            break
    return c


def str_counter(a):
    q = [0] * 26
    for i in range(len(a)):
        q[ord(a[i]) - 97] = q[ord(a[i]) - 97] + 1
    return q


def lis(arr):
    n = len(arr)
    lis = [1] * n
    maximum = 0

    for i in range(1, n):
        for j in range(0, i):
            if arr[i] > arr[j] and lis[i] < lis[j] + 1:
                lis[i] = lis[j] + 1
                maximum = max(maximum, lis[i])
    return maximum


def gcd(a, b):
    if b == 0:
        return a
    else:
        return gcd(b, a % b)


def agcd(a, *b):

    for i in b:
        a = gcd(a, i)
    return a


def lcm(a, *b):
    val = a
    gc = a
    for i in b:
        gc = gcd(gc, i)
        val *= i
    return val // gc


def ncr(n, r):
    return M.factorial(n) // (M.factorial(n - r) * M.factorial(r))


def npr(n, r):
    return M.factorial(n) // M.factorial(n - r)


# * Make work easy funtions


def IF(c, t, f):
    return t if c else f


def YES(c):
    print(IF(c, "YES", "NO"))


def Yes(c):
    print(IF(c, "Yes", "No"))


def yes(c):
    print(IF(c, "yes", "no"))


def JA(a, sep=" "):
    print(sep.join(map(str, a)))


def JAA(a, s="\n", t=" "):
    return s.join(t.join(map(str, b)) for b in a)


def PS(a, s=" "):
    print(str(a), end=s)


# * Region Taking Input


def I():
    return int(inp())


def F():
    return float(inp())


def LI():
    return list(map(int, inp().split()))


def LF():
    return list(map(float, inp().split()))


def MATI(n):
    return [LI() for i in range(n)]


def MATS(n):
    return [list(inp()) for i in range(n)]


def IV():
    return map(int, inp().split())


def FV():
    return map(float, inp().split())


def LS():
    return list(inp())


def S():
    return inp()


# * Region Fastio

BUFSIZE = 8192


class FastIO(IOBase):
    newlines = 0

    def __init__(self, file):
        self._fd = file.fileno()
        self.buffer = BytesIO()
        self.writable = "x" in file.mode or "r" not in file.mode
        self.write = self.buffer.write if self.writable else None

    def read(self):
        while True:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            if not b:
                break
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines = 0
        return self.buffer.read()

    def readline(self):
        while self.newlines == 0:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            self.newlines = b.count(b"\n") + (not b)
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines -= 1
        return self.buffer.readline()

    def flush(self):
        if self.writable:
            os.write(self._fd, self.buffer.getvalue())
            self.buffer.truncate(0), self.buffer.seek(0)


class IOWrapper(IOBase):
    def __init__(self, file):
        self.buffer = FastIO(file)
        self.flush = self.buffer.flush
        self.writable = self.buffer.writable
        self.write = lambda s: self.buffer.write(s.encode("ascii"))
        self.read = lambda: self.buffer.read().decode("ascii")
        self.readline = lambda: self.buffer.readline().decode("ascii")


sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
inp = lambda: sys.stdin.readline().rstrip("\r\n")


# >==================================== Write The Useful Code Here ============================

# >Make it one if there is some test cases
TestCases = 0  # >=====================
# > =======================================
"""
> Sometimes later becomes never. Do it now.
! Be Better than yesterday.
!Your limitation—it’s only your imagination.
> Push yourself, because no one else is going to do it for you.
? The harder you work for something, the greater you’ll feel when you achieve it.
! Great things never come from comfort zones.
! Don’t stop when you’re tired. Stop when you’re done.
> Do something today that your future self will thank you for.
? It’s going to be hard, but hard does not mean impossible.
! Sometimes we’re tested not to show our weaknesses, but to discover our strengths.
"""
# @  Goal is to get Candidate Master


def solve():
    n = I()

    c = 0
    while True:
        c += 1
        n += 1
        if "8" in str(n):
            break
    print(c)


# ! This is the Main Function


def main():
    flag = 1
    #! Checking we are offline or not
    try:
        sys.stdin = open(
            "c:/Users/Manoj Chowdary/Documents/python/CodeForces/contest-div-2/input.txt",
            "r",
        )
        sys.stdout = open(
            "c:/Users/Manoj Chowdary/Documents/python/CodeForces/contest-div-2/output.txt",
            "w",
        )
    except:
        flag = 0

    t = 1
    if TestCases:
        t = I()
    for _ in range(1, t + 1):
        solve()

    if flag:
        print("Time: %.4f sec" % (time.time() - start_time))
        localtime = time.asctime(time.localtime(time.time()))
        print(localtime)
        sys.stdout.close()


# !  End Region


if __name__ == "__main__":

    # ? Incresing Stack Limit
    # increase_stack()

    #! Calling Main Function
    main()