from functools import lru_cache
import sys
sys.setrecursionlimit(10 ** 7)
MOD = 998244353

@lru_cache(None)
def solve2(n):
    if n <= 0:
        return 0
    if n <= 3:
        return 1
    return (solve2(n - 1) + solve2(n - 3)) % MOD

def solve(n, x, y):
    if x > y:
        return solve(n, y, x)
    if x > 1:
        return solve(n - x, 1, y - x)
    if y < n:
        return solve(y - 1, x, y - 1)
    return solve2(n)

print(solve(*map(int, input().split())))