import math

mod = 998244353

def amari(n, mod):
    
    fact = [1] * (n + 1)
    for i in range(2, n + 1):
        fact[i] = fact[i - 1] * i % mod
    return fact

def solve(n):
    
    fact = amari(n, mod)
    ans = 0

    for a in range(n + 1):
        for b in range(n - a + 1):
            c = n - a - b
            ans += fact[n] * pow(fact[a], -1, mod) * pow(fact[b], -1, mod) * pow(fact[c], -1, mod)
            ans %= mod
    return ans

n = int(input())
print(solve(n))