package main

import (
	"fmt"
	"math"
)

func main() {
	var n int
	_, _ = fmt.Scan(&n)

	mod := int(math.Pow10(9)) + 7
	fmt.Println(((4*PowMod793(10, n, mod) - 1) * PowMod793(3, mod-2, mod)) % mod)
}

func PowMod793(x, n, mod int) int {
	if n <= 1 {
		return x
	} else if n%2 == 1 {
		return (PowMod793(x, n-1, mod) * x) % mod
	} else {
		m := PowMod793(x, n/2, mod)
		return (m * m) % mod
	}
}