#include "gap.h"
#include <bits/stdc++.h>
#define long long long
using namespace std;
const int N = 1e5+5;
long findGap(int T, int n) {
long l, r;
MinMax(0, 2e18, &l, &r);
if(T == 1) {
long ans = 0;
for(int i = 1; i < (n + 1) / 2; i++) {
long nl, nr;
MinMax(l + 1, r - 1, &nl, &nr);
if(nl != -1) ans = max(ans, nl - l), l = nl;
if(nr != -1) ans = max(ans, r - nr), r = nr;
}
if(l != r) ans = max(ans, r - l);
return ans;
} else {
long gap = (r - l + n - 1) / n, ans = 0, pv = l;
for(long i = l + 1, j = i + gap; ; i = j + 1, j = i + gap) {
long nl, nr;
j = min(j, r - 1);
if(i > j) break;
MinMax(i, j, &nl, &nr);
if(nl != -1) ans = max(ans, nl - pv);
if(nr != -1) pv = nr;
}
return max(ans, r - pv);
}
}
