#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long
#include "gap.h"
#define double long double
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod (10*10*10*10*10*10*10*10*10+7)
#define PI 3.14159265359
#define MAXN 100005
#define INF 1000000005
#define LINF 1000000000000000005ll
#define CODE_START ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll v[100005];
int findGap(int t,int n){
if(t==1){
ll l=1,r=n,a=0,b=1e18;
while(l<=r){
MinMax(a,b,&a,&b);
v[l++]=a++;
v[r--]=b--;
}
ll ans=0;
for(ll i=2;i<=n;i++)
{
ans=max(ans,v[i]-v[i-1]);
}
return ans;
}else {
ll a,b,ans=0;
MinMax(0,1e18,&a,&b);
if(b-a+1==n){
return 1;
}
ll nr=(b-a-1)/(n-1);
ll last=a;
ll x,y;
for(ll i=a+1;i<=b-1;i+=nr+1){
MinMax(i,i+nr,&x,&y);
if(x!=-1){
ans=max(ans,x-last);
}
if(y!=-1){
last=y;
}
}
return max(ans,b-last);
}
}
/*
int32_t main(){
CODE_START;
*/
