#include<bits/stdc++.h> using namespace std; const int mod = 998244353; const int maxn = 100000 + 10; int f[maxn]; int n, x, y; int dfs(int u){ if(f[u] != -1){ //cout << "return f[u]: " << f[u] << "; return u: " << u << endl; return f[u]; } f[u] = 0; for(int i = min(u, n); i >= 1; i--){ if(u - i > i) {//i=>going to be put in, (u - i) => from where break; } if(i == y) { continue; } //cout << "in cycle, while u is " << u << ", i is " << i << ", "; f[u] = (f[u] + dfs(u - i)) % mod; //cout << "f[u] is " << f[u] << " and f[u - i] is " << f[u - i] << endl; } //cout << "after cycle, return f[u]: " << f[u] << "; return u: " << u << endl; return f[u]; } int main() { //freopen("J3.in", "r", stdin); //freopen("J3.out", "w", stdout); scanf("%d %d %d", &n, &x, &y); f[0] = 1; for (int i = 1; i <= x; ++i) { for (int j = min(i, n); j >= 1; --j) { if (i - j > j) { break; } if (j == y) { continue; } f[i] = (f[i] + f[i - j]) % mod; } } printf("%d\n", f[x]); return 0; }