代码
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
int f[1010], a[1010], v[1010];
int main() {
int t, o, i, j, k, n, m, maxn;
cin >> t;
for (o = 1; o <= t; o++) {
cin >> n >> k;
for (i = 1; i <= n; i++)
cin >> a[i];
for (i = 1; i <= n; i++)
cin >> v[i];
memset(f, 0, sizeof(f));
f[1] = v[1];
for (i = 2; i <= n; i++) {
maxn = 0;
for (j = 1; j < i; j++)
if (f[j] > maxn && a[i] - a[j] > k)
maxn = f[j];
f[i] = v[i] + maxn;
}
maxn = 0;
for (i = 1; i <= n; i++)
maxn = max(maxn, f[i]);
cout << maxn << endl;
}
return 0;
}