//From: ifffer_2137
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define inf 0x7fffffff
#define eb emplace_back
#define pii pair<int,int>
#define mkpr make_pair
#define fir first
#define sec second
inline int read(){
	char ch=getchar();int x=0,w=1;
	while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
	while(ch>='0'&&ch<='9')x=(x<<1)+(x<<3)+ch-48,ch=getchar();return w==1?x:-x;
}
const int mod=998244353;
int pw(int a,int x){
	int s=1;
	while(x){
		if(x&1) s=s*a%mod;
		a=a*a%mod;x>>=1;
	}
	return s;
}
int n;
signed main(){
	#ifndef ONLINE_JUDGE
	freopen("data.in","r",stdin);
	freopen("test.out","w",stdout);
	#endif
	cin.tie(0),cout.tie(0);
	n=read();
	if(n==3) puts("1");
	else if(n==4) puts("2");
	else cout<<31*pw(10,mod-2)%mod<<"\n";
	return 0;
}