#include<bits/stdc++.h>
using namespace std;
int n,l,h,i,j,f[1010][1010],aa[1010],bb[1010],x;
signed main(){
//	freopen("xxx.in","r",stdin);
//	freopen("xxx.out","w",stdout);
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>l>>h;
	for(i=1;i<=n;i++)cin>>aa[i],aa[i]=aa[i-1]+aa[i];
	for(i=1;i<=n;i++)cin>>bb[i],bb[i]=bb[i-1]+bb[i];
	for(i=1;i<=n;i++)
	  for(j=i;j<=n;j++){
	  	f[i][j]=max(f[i-1][j],f[i][j-1]);
	  	x=aa[j]-aa[i-1];
	  	if(x>=l&&x<=h)f[i][j]=max(f[i][j],f[i-1][j-1]+bb[j]-bb[i-1]);
	  }
	cout<<f[n][n];
}

错了第3个点