# include "gap.h"
# include <bits/stdc++.h>
# define x first
# define y second
# define mp make_pair
// everything go according to my plan
# define pb push_back
# define sz(a) (int)(a.size())
# define vec vector
// shimkenttin kyzdary, dzyn, dzyn, dzyn...
# define y1 Y_U_NO_y1
# define left Y_U_NO_left
# define right Y_U_NO_right
using namespace std;
typedef pair <int, int> pii;
typedef long long ll;
typedef long double ld;
const int Mod = (int)1e9 + 7;
const int MX = 1073741822;
const ll MXLL = 4e18;
const int Sz = 1110111;
// a pinch of soul
const ll N = 1e18;
ll solve_1 ( int n) {
ll a[n + 2];
a[n + 1] = N + 1;
a[0] = -1;
for (int l = 1; l <= (n + 1) / 2; l++) {
int r = n - l + 1;
MinMax (a[l - 1] + 1, a[r + 1] - 1, a + l, a + r);
}
ll ans = 0;
for (int i = 1; i < n; i++)
ans = max (ans, a[i + 1] - a[i]);
return ans;
}
ll solve_2 (int n) {
ll F, S;
MinMax (0ll, N, &F, &S);
ll len = max (1ll, ((S - F - 1 + n - 2) / (n - 1)));
ll last = F;
ll ans = len;
F++;
for (ll i = 1; i <= n; i++) {
ll x, y;
MinMax (F + (i - 1) * len, F + i * len - 1, &x, &y);
if (~x) {
ans = max (ans, x - last);
last = y;
}
}
return ans;
}
ll findGap (int t, int n) {
if (t == 1)
return solve_1 (n);
else
return solve_2 (n);
}
// Coded by Z..
