#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < n; i++)
using ll = long long;
using graph = vector<vector<int>>;

const ll mod = 998244353;
const int INF = 1001001001;

int main(){
    ll n, k; cin >> n >> k;
    ll ans = 0;
    ans = (n / k) % mod * 2 % mod;
    if(n%k != 0) ans++;
    else ans--;
    cout << ans % mod << endl;
}