#include <bits/stdc++.h>
//#include "gap.h"
using namespace std;
using ll = long long;
/*
static void my_assert(int k){ if (!k) exit(1); }
static int subtask_num, N;
static long long A[100001];
static long long call_count;
long long findGap(int, int);
void MinMax(long long s, long long t, long long *mn, long long *mx)
{
int lo = 1, hi = N, left = N+1, right = 0;
my_assert(s <= t && mn != NULL && mx != NULL);
while (lo <= hi){
int mid = (lo+hi)>>1;
if (A[mid] >= s) hi = mid - 1, left = mid;
else lo = mid + 1;
}
lo = 1, hi = N;
while (lo <= hi){
int mid = (lo+hi)>>1;
if (A[mid] <= t) lo = mid + 1, right = mid;
else hi = mid - 1;
}
if (left > right) *mn = *mx = -1;
else{
*mn = A[left];
*mx = A[right];
}
if (subtask_num == 1) call_count++;
else if (subtask_num == 2) call_count += right-left+2;
}
*/
ll findGap(int T, int N) {
if(T==1) {
ll mn, mx, ans = 0;
MinMax(0,1e18,&mn,&mx);
//if(N==2) {return mx-mn;}
for(int i=0;i<(N-1)/2;i++) {
ll nMn, nMx;
MinMax(mn+1,mx-1,&nMn,&nMx);
ans=max({ans,nMn-mn,mx-nMx});
mn=nMn;
mx=nMx;
}
ans=max(ans,mx-mn);
return ans;
} else {
ll mn, mx, cur = -1;
MinMax(0,1e18,&mn,&mx);
ll b = (mx - mn + (N-2)) / (N-1);
ll ans = b;
for(int i=mn;i<mx;i+=b) {
ll nMn, nMx;
MinMax(i,i+b-1,&nMn,&nMx);
if(cur!=-1 && nMn!=-1) ans=max(ans,nMn-cur);
if(nMx != -1) cur = nMx;
}
ans = max(ans, mx - cur);
return ans;
}
}
/*
int main()
{
FILE *in = stdin, *out = stdout;
my_assert(2 == fscanf(in, "%d%d", &subtask_num, &N));
my_assert(1 <= subtask_num && subtask_num <= 2);
my_assert(2 <= N && N <= 100000);
for (int i=1;i<=N;i++) my_assert(1 == fscanf(in, "%lld", A+i));
for (int i=1;i<N;i++) my_assert(A[i] < A[i+1]);
fprintf(out, "%lld\n", findGap(subtask_num, N));
fprintf(out, "%lld\n", call_count);
}
*/
Compilation message
gap.cpp: In function 'll findGap(int, int)':
gap.cpp:41:9: error: 'MinMax' was not declared in this scope
41 | MinMax(0,1e18,&mn,&mx);
| ^~~~~~
gap.cpp:54:9: error: 'MinMax' was not declared in this scope
54 | MinMax(0,1e18,&mn,&mx);
| ^~~~~~
