#include <iostream>
#include <vector>
#include <map>
#include <algorithm>
#include <cmath>
#include <iomanip>
#include <string>
#include <list>
#include <cassert>
#include <numeric>
#include <cstdint>
#include <queue>
#include <deque>
#include <stack>
#include <set>
#include <random>
// #include <atcoder/all>
 
using ll = long long;
using ld = long double;
using namespace std;
// using namespace atcoder;
using P = pair<ll, ll>;
using Graph = vector<vector<int>>;
using Priority = priority_queue<ll, vector<ll>, greater<ll>>;// 昇順
using Priority_pair = priority_queue<P, vector<P>, greater<P>>;
// using mint_17 = modint1000000007;
// using mint = modint998244353;

#define mod 1000000007
#define MAX_WIDTH 60
#define MAX_HEIGHT 60
#define INF 1e18
#define MOD 998244353
#define PI 3.141592653589793
#define rep(i, s, n) for (ll i=(s);i<(n);i++)
#define rrep(i, s, n) for (ll i=(n);i>=(s);i--)
#define all(v) (v).begin(), (v).end()
#define YES(n) cout << ((n) ? "YES" : "NO") << endl
#define Yes(n) cout << ((n) ? "Yes" : "No") << endl
#define pb(n) push_back(n)
#define vi vector<int>
#define vll vector<ll>
#define vs vector<string>
#define vc vector<char>
#define vp vector<pair<ll, ll>>
#define mll map<ll, ll>
#define msl map<string, ll>
#define COUT(n) cout << (n) << endl
#define isInGrid(n, h, w) (0 <= (n) && (n) < (h) && 0 <= (n) && (n) < (w))
template<typename T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
template<typename T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }

ll N, X, Y, dp[200010];
bool reached[200010];
ll dfs(ll s, ll g, ll cnt, ll pre) {
    if(reached[s]) return dp[s];
    reached[s] = true;
    
    if(s == g) {
        if(cnt == N) {
            return 1;
        } else {
            return 0;
        }
    }

    ll res = 0;
    rep(i, -2, 3) {
        ll nx = s+i;
        if(!(0 <= nx && nx < N) || reached[nx]) continue;
        res += dfs(nx, g, cnt+1, s);
        res %= MOD;
        reached[nx] = false;
    }

    return dp[s] = res;
}

int main() {
    cin >> N >> X >> Y;
    X--; Y--;
    ll ans = dfs(X, Y, 1, -1);
    ans %= MOD;

    COUT(ans);

    return 0;
}