#include <bits/stdc++.h>
#include "gap.h"
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define uniq(x) x.erase(unique(all(x)), x.end())
#define rall(x) x.rbegin(), x.rend()
//#define int long long
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;
void setIO() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
ll findGap(int T, int n) {
vector<ll> v(n);
ll mn = 0, mx = 1e18;
int i=0, j=n-1;
while(i <= j) {
MinMax(mn, mx, &mn, &mx);
v[i] = mn;
v[j] = mx;
i++, j--;
}
ll ans = 0;
for(int i=1; i<n; i++)
ans = max(ans, v[i] - v[i-1]);
return ans;
}
// int32_t main() {
// setIO();
// //code starts here
// return 0;
// }
