#include "ricehub.h"
#include <algorithm>
#include <cstdlib>
#include <iostream>
#include <set>
#include <vector>
using namespace std;
int besthub(int R, int L, int X[], long long B) {
vector <long long> v (R + 1);
for (int i = 1; i <= R; i++)
v[i] = X[i - 1];
vector <long long> pref (R + 1);
for (int i = 1; i <= R; i++)
pref[i] = pref[i - 1] + v[i];
long long ans = 0;
for (int i = 1; i <= R; i++) {
// chooce rice hub
int l = 0, r = R;
while (l <= r) {
int mid = (l + r) / 2;
long long x = mid / 2;
long long y = mid - x;
if (i > (R + 1) / 2)
swap (x, y);
if (i - x - 1 < 0 || i + y > R) {
r = mid - 1;
continue;
}
long long prc = (
x * v[i] - (pref[i - 1] - pref[i - x - 1]) +
(pref[i + y] - pref[i]) - y * v[i]
);
if (prc <= B) {
ans = max (ans, x + y + 1);
l = mid + 1;
} else {
r = mid - 1;
}
}
}
return ans;
}
