#include<bits/stdc++.h>
using namespace std;
int n,s,t,m,a[1001],f[1001];
int main()
{
    // freopen("gold.in","r",stdin);
    // freopen("gold.out","w",stdout);
    cin>>m;
    while(m--)
    {
        memset(f,0,sizeof(f));
        cin>>n;
        cin>>s>>t;
        for (int i=1; i<=n; i++)
            cin>>a[i];
        f[1]=a[1];
        for (int i=2; i<=n; i++)
            for (int j=s; j<=t; j++)
                if (i-j>0)
                    f[i]=max(f[i],f[i-j]+a[i]);
        cout<<f[n]<<endl;
    }
    return 0;
}