#include <vector>
#include <iostream>
#include <algorithm>
#include "books.h"
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.
//
void solve(int N, int K, long long A, int S) {
vector<int> lowest(K);
int losum = 0;
for(int i = 0; i < K; i ++)
{
lowest[i] = skim(i + 1);
losum += lowest[i];
}
int lo = 0, hi = N - 1;
while(lo + 1 < hi)
{
int m = (lo + hi) / 2;
if(skim(m) < A) lo = m;
else hi = m;
}
vector<int> highest(K);
int hisum = 0;
for(int i = 0; i < K; i ++)
{
highest[i] = skim(hi - K + i + 2);
hisum += highest[i];
}
if(hisum < A || losum > 2 * A) impossible();
int cut = -1;
while (losum < A)
{
cut ++;
losum += highest[cut] - lowest[cut];
}
vector<int> ansvec(K);
for(int i = 0; i < K; i ++)
{
if(i <= cut) ansvec[i] = hi - K + 2 + i;
else ansvec[i] = i;
}
answer(ansvec);
}
