#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0;i<((int)(n));i++)
#define reg(i,a,b) for(int i = ((int)(a));i<=((int)(b));i++)
#define irep(i,n) for(int i = ((int)(n)-1);i>=0;i--)
#define ireg(i,a,b) for(int i = ((int)(b));i>=((int)(a));i--)
typedef long long ll;

/*
*/

const int MAT=125;
struct Mat { ll v[MAT][MAT]; };
Mat mulmat(Mat& a,Mat& b,int n=MAT,ll mod=998244353) {
	Mat r;
	rep(x,n) rep(y,n) r.v[x][y]=0;
	rep(x,n) rep(z,n) rep(y,n) {
		r.v[x][y] += a.v[x][z]*b.v[z][y];
		r.v[x][y] %= mod;
	}
	rep(x,n) rep(y,n) r.v[x][y]%=mod;
	return r;
}
Mat powmat(ll p,Mat a,int n=MAT) {
	Mat r;
	rep(x,n) rep(y,n) r.v[x][y]=0;
	rep(i,n) r.v[i][i]=1;
	while(p) {
		if(p%2) r=mulmat(r,a,n);
		a=mulmat(a,a,n);
		p>>=1;
	}
	return r;
}

ll n,k,ans=0;
ll mod=998244353;
Mat mt;

void init(){
	cin>>n>>k;
}

int main(void){
	init();
	rep(i,k*k*k)rep(j,k*k*k)mt.v[i][j]=0;
	rep(a,k)rep(b,k)rep(c,k){
		ll from = a*k*k+b*k+c;
		mt.v[((a+1)%k)*k*k+b*k+c][from]++;
		mt.v[a*k*k+((b+a)%k)*k+c][from]++;
		mt.v[a*k*k+b*k+((c+b)%k)][from]++;
	}
	mt=powmat(n,mt,k*k*k);
	rep(a,k)rep(b,k){
		ans=(ans+mt.v[a*k*k+b*k][0])%mod;
	}
	cout<<ans<<endl;
	return 0;
}