package main

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

func main() {
	log.SetFlags(log.Lshortfile)
	// N := nextString()
	N := nextInt()
	MOD := int(1e9) + 7
	var dp [1000000][10]int
	for i := 0; i < int(1e6); i++ {
		for j := 0; j < 10; j++ {
			if i == 0 {
				dp[i][j] = 1
			} else {
				for k := j; k < 10; k++ {
					dp[i][j] += dp[i-1][k] % MOD
				}
			}
		}
	}
	var num [1000000]int
	for i := 0; i < 1000000; i++ {
		for j := 0; j < 10; j++ {
			num[i] += dp[i][j] % MOD
		}
	}
	// log.Println(num)
	// rtn := 0
	// for i := 0; i < len(N); i++ {
	// 	n := N[i] - '0'
	// 	idx := len(N) - i - 1
	// 	log.Println(n, idx, int(n))
	// 	for j := 0; j <= int(n); j++ {
	// 		rtn += dp[idx][j]
	// 	}
	// }
	fmt.Println(num[N-1] % MOD)
}

func check(a int) bool {
	s := fmt.Sprintf("%d", a)
	rtn := true
	for i := 0; i < len(s)-1; i++ {
		if s[i] > s[i+1] {
			rtn = false
		}
	}
	return rtn
}

func pow(a, b int) int {
	rtn := 1
	for i := 0; i < b; i++ {
		rtn *= 10
	}
	return rtn
}

func max(a ...int) int {
	r := a[0]
	for i := 0; i < len(a); i++ {
		if r < a[i] {
			r = a[i]
		}
	}
	return r
}
func min(a ...int) int {
	r := a[0]
	for i := 0; i < len(a); i++ {
		if r > a[i] {
			r = a[i]
		}
	}
	return r
}
func sum(a []int) (r int) {
	for i := range a {
		r += a[i]
	}
	return r
}
func minmax(a, b int) (int, int) {
	if a > b {
		return b, a
	}
	return a, b
}
func abs(a int) int {
	if a < 0 {
		return -a
	}
	return a
}

type Pair struct {
	a, b int
}

type Pairs []Pair

func (p Pairs) Len() int {
	return len(p)
}
func (p Pairs) Swap(i, j int) {
	p[i], p[j] = p[j], p[i]
}

func (p Pairs) Less(i, j int) bool {
	return p[i].b < p[j].b
}

var nextReader func() string

func init() {
	nextReader = NewScanner()
}

func NewScanner() func() string {
	r := bufio.NewScanner(os.Stdin)
	r.Buffer(make([]byte, 1024), int(1e+11))
	r.Split(bufio.ScanWords)
	return func() string {
		r.Scan()
		return r.Text()
	}
}
func nextString() string {
	return nextReader()
}
func nextInt64() int64 {
	v, _ := strconv.ParseInt(nextReader(), 10, 64)
	return v
}
func nextInt() int {
	v, _ := strconv.Atoi(nextReader())
	return v
}
func nextInts(n int) []int {
	r := make([]int, n)
	for i := 0; i < n; i++ {
		r[i] = nextInt()
	}
	return r
}
func nextFloat64() float64 {
	f, _ := strconv.ParseFloat(nextReader(), 64)
	return f
}