#include <bits/stdc++.h>
#include "gap.h"
#define task "B"
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 1e5 + 5;
const ll INF = 1e18 + 5;
ll ans = 0;
ll findGap(int t, int n)
{
if (t == 1)
{
ll l = 0, r = 1e18, a[n + 1];
for (int i = 1; i <= n && (n - i + 1) >= i; i++)
{
MinMax(l, r, &a[i], &a[n - i + 1]);
l = a[i] + 1;
r = a[n - i + 1] - 1;
}
ans = 0;
for (int i = 2; i <= n; i++)
{
ans = max(ans, a[i] - a[i - 1]);
}
return ans;
} else
{
ll l = 0, r = 1e18;
MinMax(l, r, &l, &r);
if (n == 2)
return r - l;
ll h = (r - l + n - 2) / (n - 1);
h--;
ll ans = 0;
ll prem = l;
for (ll i = l; i <= r; i += h + 1)
{
ll mn, mx;
MinMax(i, i + h, &mn, &mx);
if (mn == -1)
continue;
ans = max(ans, mn - prem);
prem = mx;
}
return ans;
}
}
