package main

import (
	"fmt"
)

const MOD = 998244353

func main() {
	var N int
	fmt.Scan(&N)

	x := 1
	s3 := 3
	for ; N > 0; N >>= 1 {
		if N&1 == 1 {
			x = (x * s3) % MOD
		}
		s3 = (s3 * s3) % MOD
	}
	fmt.Println(x)
}