package main

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

func configure(scanner *bufio.Scanner) {
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 1000005), 1000005)
}
func getNextString(scanner *bufio.Scanner) string {
	scanned := scanner.Scan()
	if !scanned {
		panic("scan failed")
	}
	return scanner.Text()
}
func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}
func getNextInt64(scanner *bufio.Scanner) int64 {
	i, _ := strconv.ParseInt(getNextString(scanner), 10, 64)
	return i
}
func getNextFloat64(scanner *bufio.Scanner) float64 {
	i, _ := strconv.ParseFloat(getNextString(scanner), 64)
	return i
}
func main() {
	fp := os.Stdin
	wfp := os.Stdout
	extra := 0
	if os.Getenv("I") == "IronMan" {
		fp, _ = os.Open(os.Getenv("END_GAME"))
		extra = 100
	}
	scanner := bufio.NewScanner(fp)
	configure(scanner)
	writer := bufio.NewWriter(wfp)
	defer func() {
		r := recover()
		if r != nil {
			fmt.Fprintln(writer, r)
		}
		writer.Flush()
	}()
	solve(scanner, writer)
	for i := 0; i < extra; i++ {
		fmt.Fprintln(writer, "-----------------------------------")
		solve(scanner, writer)
	}
}
func solve(scanner *bufio.Scanner, writer *bufio.Writer) {
	n := getNextInt64(scanner)
	if n == 1 {
		fmt.Fprintln(writer, 2)
		return
	}
	var a, b, c mint
	a = 4
	b = 5
	c = 1
	if n&1 == 1 {
		a.MulAs(3)
		n--
	}
	n -= 2
	n >>= 1
	for n > 0 {
		if n&1 == 1 {
			c.MulAs(b)
		}
		b.MulAs(b)
		n >>= 1
	}
	fmt.Fprintln(writer, a.Mul(c))
}

type mint int64

func (mt mint) Mod() mint {
	m := mint(1e9 + 7)
	mt %= m
	if mt < 0 {
		return mt + m
	}
	return mt
}
func (mt mint) Inv() mint {
	return mt.Pow(mint(0).Sub(2))
}
func (mt mint) Pow(n mint) mint {
	p := mint(1)
	for n > 0 {
		if n&1 == 1 {
			p.MulAs(mt)
		}
		mt.MulAs(mt)
		n >>= 1
	}
	return p
}
func (mt mint) Add(x mint) mint {
	return (mt + x).Mod()
}
func (mt mint) Sub(x mint) mint {
	return (mt - x).Mod()
}
func (mt mint) Mul(x mint) mint {
	return (mt * x).Mod()
}
func (mt mint) Div(x mint) mint {
	return mt.Mul(x.Inv())
}
func (mt *mint) AddAs(x mint) *mint {
	*mt = mt.Add(x)
	return mt
}
func (mt *mint) SubAs(x mint) *mint {
	*mt = mt.Sub(x)
	return mt
}
func (mt *mint) MulAs(x mint) *mint {
	*mt = mt.Mul(x)
	return mt
}
func (mt *mint) DivAs(x mint) *mint {
	*mt = mt.Div(x)
	return mt
}