#include <bits/stdc++.h>
using namespace std;
const int MOD = 998244353;
long solve(long N, long M) {
	if(N > M) return 1;
	long t = solve(N, M - N) + solve(N, M - 1);
	return t % MOD;
}
long N, M;
int main() {
	cin >> N >> M;
	cout << solve(N, M) << "\n";
}