#include <bits/stdc++.h>
#include "books.h"
using namespace std;
#pragma GCC optimize("O3")
#define ll int
#define double double long
#define fori(i,j,k) for(ll i=j; i<=k;i++)
#define study ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define pb push_back
#define all(s) s.begin(),s.end()
#define ins insert
#define ss second
#define ff first
#ifndef DB
#define DB 0
#endif
#define debugl(l) if constexpr((l)<DB)
#define debug debugl(0)
const ll sz=1e4+10;
ll INF=1e9;
ll mod=1e9+7;
//
// --- 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<ll>v(N+10,0);
fori(i,1,N){
v[i]=skim(i);
}
ll sum=0;
fori(i,1,K)
sum+=v[i];
if(sum<A || sum>2*A)
impossible();
else {
vector<ll>ans;
fori(i,1,K)
ans.pb(i);
answer(ans);
}
}
