#pragma GCC optimize("Ofast","unroll-loops","omit-frame-pointer","inline")
#pragma GCC option("arch=native","tune=native","no-zero-upper")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2")
#pragma GCC optimize(3)
#include<bits/stdc++.h>
#define N 100010
#define LL long long
#define mod 998244353
#define rep(i,l,r) for(int i=l;i<=r;i++)
#define drep(i,r,l) for(int i=r;i>=l;i--)
using namespace std;
int rd() {
	int res=0,f=1;char ch=getchar();
	while(ch<'0'||ch>'9') {if(ch=='-') f*=-1;ch=getchar();}
	while(ch>='0'&&ch<='9') res=(res<<1)+(res<<3)+(ch^48),ch=getchar();
	return res*f;
}
int n,a[N],b[N],m;
bool vis[N];int pri[N],tot,pre[N],mx[N];
void Deal_first() {
	rep(i,2,n) {
		if(!vis[i]) pri[++tot]=i,pre[i]=tot;
		for(int j=1;j<=tot&&i*pri[j]<=n;j++) {
			vis[i*pri[j]]=1,pre[i*pri[j]]=j;
			if(i%pri[j]==0) break;
		}
	}
}
void dfs(int x,int cnt) {
	vis[x]=1;
	if(!vis[a[x]]) dfs(a[x],cnt+1);
	else b[++m]=cnt;
}
int main() {
	n=rd();
	Deal_first();
	rep(i,1,n) a[i]=rd(),vis[i]=0;
	rep(i,1,n) if(!vis[i]) dfs(i,1);
	
	LL ans=1;
	rep(i,1,m) {
		if(b[i]&1) {
			b[i]--;
			while(b[i]>1) {
				int tmp=pre[b[i]],cnt=0;
				while(b[i]%pri[tmp]==0) b[i]/=pri[tmp],cnt++;
				mx[tmp]=max(mx[tmp],cnt);
			}
		}
		else ans=max(ans,1ll*b[i]-1);
	}
	LL res=1;
	rep(i,1,tot) {
		while(mx[i]--) res=res*pri[i]%mod;
	}
	printf("%lld",(res+ans)%mod);
	return 0;
}