#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define wt(v) ({unsigned _z=v;do*--wp=_z%10+48;while(_z/=10);})
#define wt1(v) ({char wbuf[64],*wp=wbuf+sizeof wbuf;wt(v);write(1,wp,wbuf+sizeof wbuf-wp);})
#define MD 998244353

typedef unsigned long ulong;

int inverse(int a){
	int b=MD;
	int u=1;
	int v=0;
	while(b){
		int q=a/b,t;
		t=b, b=a-q*b, a=t;
		t=v, v=u-q*v, u=t;
	}
	if(u<0){
		u+=MD;
	}
	return u;
}

#define M 300004
unsigned fac[M];

void mkfac(){
	ulong x=1;
	fac[0]=x;
	for(ulong i=1;i<M;i++){
		x=x*i%MD;
		fac[i]=x;
	}
}

ulong f(long a,long b){
	return (ulong)fac[a+b]*inverse((ulong)fac[a]*fac[b]%MD)%MD;
}

int main(){
	mkfac();
	rd_init();
	long n=rd();
	long l=rd()-1;
	long u=rd();
	ulong r=MD*2;
	r+=f(n,n+u);
	r-=f(n,n+l);
	if(n-2>=0){
		r-=f(n+u+2,n-2);
	}
	if(n+l-u-2>=0){
		r+=f(n+u+2,n+l-u-2);
	}
	wt1(r%MD);
	_exit(0);
}