package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

func has8(n int64) bool {
	s := strconv.FormatInt(n, 10)
	for i := 0; i < len(s); i++ {
		if s[i] == '8' {
			return true
		}
	}
	return false
}

func main() {
	in := bufio.NewReader(os.Stdin)
	var a int64
	fmt.Fscan(in, &a)
	for b := int64(1); ; b++ {
		if has8(a + b) {
			fmt.Println(b)
			return
		}
	}
}