#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MAXN = 1e18;
ll a[100000], j = 0;
ll findGap(int T, int N) {
if (T == 1) {
ll l = 1, r = MAXN;
ll mn, mx;
vector<ll> v;
for (ll i = 0; i < (N + 1) / 2; i++) {
MinMax(l, r, &mn, &mx);
a[j++] = mn;
a[j++] = mx;
l = mn + 1, r = mx - 1;
}
sort(a, a + N);
ll ans = 0;
for (ll i = 0; i < N - 1; i++) ans = max(ans, a[i + 1] - a[i]);
return ans;
} else {
ll mn, mx;
MinMax(1, MAXN, &mn, &mx);
ll step = (mx - mn + N - 2) / (N - 1);
ll ans = step, x, y, l = mn, i;
for (i = mn; i + step < mx; i += step + 1) {
MinMax(i, i + step, &x, &y);
if (x != -1) {
ans = max(ans, x - l);
l = y;
}
}
MinMax(i, mx, &x, &y);
if (x != -1) ans = max(ans, x - l);
return ans;
}
}
