#include <bits/stdc++.h>
#include "gap.h"
using namespace std;
#define ll long long
ll findGap(int t, int n){
ll mn = 1, mx = 1e18, A[n], lim, lb, ans = 0;
if (t == 1){
for (ll i = 0, j = n - 1; i <= j; i++, j--){
MinMax(mn, mx, &mn, &mx);
A[i] = mn; A[j] = mx;
mn++; mx--;
}
for (ll i = 1; i < n; i++)
ans = max(ans, A[i] - A[i - 1]);
}
else{
MinMax(mn, mx, &mn, &mx);
lb = (mx - mn - 1) / (n - 1) + 1; lim = mx;
for (ll l = mn, r = mn + lb - 1, prvMx = 1e18; l <= lim; l += lb, r += lb){
MinMax(l, r, &mn, &mx);
ans = max(ans, mn - prvMx);
if (~mx) prvMx = mx;
}
}
return ans;
}
