//khodaya khodet komak kon
# include <bits/stdc++.h>
# include "gap.h"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <int, int> pii;
typedef pair <pii, int> ppi;
typedef pair <int, pii> pip;
typedef pair <pii, pii> ppp;
typedef pair <ll, ll> pll;
# define A first
# define B second
# define endl '\n'
# define sep ' '
# define all(x) x.begin(), x.end()
# define kill(x) return cout << x << endl, 0
# define SZ(x) int(x.size())
# define lc id << 1
# define rc id << 1 | 1
# define fast_io ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
ll power(ll a, ll b, ll md) {return (!b ? 1 : (b & 1 ? a * power(a * a % md, b / 2, md) % md : power(a * a % md, b / 2, md) % md));}
const int xn = 1e6 + 10;
const int xm = - 20 + 10;
const int sq = 320;
const int inf = 1e9 + 10;
const ll INF = 1e18 + 10;
const ld eps = 1e-15;
const int mod = 1e9 + 7;//998244353;
const int base = 257;
ll findGap(int T, int n){
ll L, R, ans = 0, mn, mx;
MinMax(0, INF, &L, &R);
vector <ll> vec;
vec.push_back(L);
vec.push_back(R);
if (T == 1){
int l = 2, r = n - 1;
mn = L, mx = R;
while (l <= r){
MinMax(mn + 1, mx - 1, &mn, &mx);
vec.push_back(mn);
vec.push_back(mx);
++ l, -- r;
}
}
else{
ll t = (R - L + n) / (n - 1);
ans = t;
ll last = L;
while (last < R){
MinMax(last + 1, last + t, &mn, &mx);
vec.push_back(mn);
vec.push_back(mx);
last += t;
}
}
sort(all(vec));
for (int i = 1; i < SZ(vec); ++ i)
ans = max(ans, vec[i] - vec[i - 1]);
return ans;
}
/*
int main(){
fast_io;
return 0;
}
*/
