#include<bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using mint=modint998244353; //1000000007;
using ll=long long;
using pp=pair<int,int>;
#define sr string 
#define vc vector
#define fi first
#define se second
#define rep(i,n) for(int i=0;i<(int)n;i++)
#define pb push_back
#define all(v) v.begin(),v.end()
#define pque priority_queue
#define bpc(a) __builtin_popcount(a)
struct divs{
  int n;
  vector<int> f, primes;
  divs(int n=1):n(n), f(n+1) {
    f[0] = f[1] = -1;
    for (ll i = 2; i <= n; ++i) {
      if (f[i]) continue;
      primes.push_back(i);
      f[i] = i;
      for (ll j = i*i; j <= n; j += i) {
        if (!f[j]) f[j] = i;
      }
    }
  }
  bool isPrime(int x) { return f[x] == x;}
  vector<int> factorList(int x) {
    vector<int> res;
    while (x != 1) {
      res.push_back(f[x]);
      x /= f[x];
    }
    return res;
  }
  vector<pair<int,int>> factor(int x) {
    vector<int> fl = factorList(x);
    if (fl.size() == 0) return {};
    vector<pair<int,int>> res(1, pair<int,int>(fl[0], 0));
    for (int p : fl) {
      if (res.back().first == p) {
        res.back().second++;
      } else {
        res.emplace_back(p, 1);
      }
    }
    return res;
  }
};
int main(){
	int n,l,r;cin>>n>>l>>r;
	if(l==1&&r==1){
		cout<<1;
		return 0;
	}
	if(l==1||r==1){
		cout<<2;
		return 0;
	}
	vc<int>a(n); rep(i,n)a[i]=i;
    rep(i,l)a[i]=l-1-i;
    auto pre=a;
    rep(i,r)a[n-r+i]=pre[n-1-i];
    dsu d(n); 
    rep(i,n)d.merge(i,a[i]);
    map<int,int>m;
    divs di(n);
    rep(i,n)if(d.leader(i)==i){
    	int t=d.size(i);
    	for(auto [x,y]:di.factor(t)){
    		m[x]=max(m[x],y);
    	}
    }
    mint ans=2;
    for(auto [x,y]:m)ans*=mint(x).pow(y);
    //rep(i,n)cout<<a[i]<<' ';
    cout<<ans.val();
}