#include <bits/stdc++.h>
#include "books.h"
#define pb push_back
using namespace std;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
// books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
// g++ books_sample.cpp sample_grader.cpp
// in this folder.
//
int n, k, s;
long long a;
long long check(int from, int to)
{
long long sum = 0;
for (int i = from; i <= to; ++ i)
{
sum += skim(i);
if(sum > 2*a)return sum;
}
return sum;
}
void solve(int N, int K, long long A, int S)
{
n = N;
k = K;
a = A;
int l = 1, r = n-k+1, mid, ans = -1;
while(l <= r)
{
mid = (l + r)/2;
long long feedback = check(mid, mid+k-1);
if(feedback < a)
{
l = mid + 1;
}
else if(feedback > 2*a)
{
r = mid - 1;
}
else
{
vector < int > v;
for (int i = mid; i < mid+k; ++ i)
v.pb(i);
answer(v);
return;
}
}
impossible();
}
