from collections import deque
import sys
import pypyjit
import itertools
import heapq
import math
from collections import deque, defaultdict
from functools import lru_cache

# for AtCoder Easy test
if __file__ == 'prog.py':
    pass
else:
    sys.setrecursionlimit(10 ** 6)
pypyjit.set_param('max_unroll_recursion=-1')

input = sys.stdin.readline


def readints(): return map(int, input().split())
def readlist(): return list(readints())
def readstr(): return input()[:-1]


N = int(input())
print(pow(3, N, 998244353))