#include "ricehub.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> pii;
int besthub(int n, int L, int X[], long long b)
{
vector <ll> fields;
for (int i = 0; i < n; i++) fields.emplace_back(X[i]);
if (n <= 5e3)
{
ll cur = 0;
if (n == 1) return 1;
int output = 0;
ll p;
int left, right;
for (int i = 0; i < n; i++)
{
p = fields[i];
cur = b;
left = i - 1, right = i + 1;
while (true)
{
if (left < 0 && right == n)
{
break;
} else if (left < 0)
{
if (cur >= fields[right] - p) {
cur -= fields[right] - p;
right++;
} else break;
} else if (right == n)
{
if (cur >= p - fields[left]) {
cur -= p - fields[left];
left--;
} else break;
}
else if (p - fields[left] < fields[right] - p)
{
if (cur >= p - fields[left]) {
cur -= p - fields[left];
left--;
} else break;
} else {
if (cur >= fields[right] - p) {
cur -= fields[right] - p;
right++;
} else break;
}
}
output = max(output, right - left - 1);
}
return output;
}
auto lt = fields.begin(), pos = fields.begin(), rt = fields.begin() + 1;
ll left, right;
left = right = 0;
ll cur = 0;
ll output = 0;
while (pos != fields.end())
{
while (b < cur)
{
cur -= *pos - *lt;
lt++, left--;
}
while (rt != fields.end() && cur + *rt - *pos <= b)
{
cur += *rt - *pos;
right++, rt++;
}
while (rt != fields.end() && (*pos - *lt) > (*rt - *pos))
{
left--, right++, lt++, rt++;
while (rt != fields.end() && cur + *rt - *pos <= b)
{
cur += *rt - *pos;
right++, rt++;
}
}
output = max(output, left + right + 1);
if (pos + 1 != fields.end()) {
cur += (*(pos + 1) - *pos) * (left + 1);
cur += (*pos - *(pos + 1)) * (right);
}
pos++, left++, right--;
}
return output;
}
