include bits stdc using namespace std define MAXN 30100 define INF 1e9

#include <bits/stdc++.h>
using namespace std;
#define MAXN 30100
#define INF 1e9
#define WL(t) while(t--)
#define FOR(i,s,e) for(int i=s; i<=e; i++)
int p[MAXN], prefix[MAXN];
int n, k, w;
int max_val;
class fastio {
public:
    fastio() {
        ios_base::sync_with_stdio(false);
        cout.tie(nullptr);
        cin.tie(nullptr);
    }
} __fastio;
void prefixSum() {
    prefix[0] = 0;
    FOR(i,1,n) {
        prefix[i] = prefix[i-1] + p[i];
    }
}
void input() {
    cin >> n >> k >> w;
    p[0] = 0;
    FOR(i,1,n) {
        cin >> p[i];
    }
}
int f(int i, int k, int r) {
    if(k == 0) return 0;
    if(i > n) return 0;
    if(i - w < r) return f(i+1, k, r);
    max_val = -INF;
    for(int j=1; j<=n; j++) {
        max_val = max(max_val, f(i+j, k-1, i) + prefix[i] - prefix[i-w]);
    }
    return max_val;
}
void solve() {
    input();
    prefixSum();
    int maxi = -INF;
    FOR(i,1,n) {
        maxi = max(maxi, f(i,k,0));
    }
    cout << maxi << endl;
}
int main() {
  __fastio;
  int t; cin >> t;
  WL(t) {
      solve();
  }
  return 0;
}