#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#include"books.h"
using namespace std;
//using namespace __gnu_pbds;
//#define ll long long
//#define endl "\n"
//int mod=1e9+7;
//const int N=2e5+5;
//template<class x>
//using ordered_multiset = tree<x, null_type,less_equal<x>, rb_tree_tag,tree_order_statistics_node_update>;
void solve(int N, int K, long long A, int S) {
multiset<int> st;
int v[N];
map<int,int> mp;
for (int i=0;i<N;i++) {
v[i]=skim(i+1);
st.insert(v[i]);
mp[v[i]]=i+1;
}
int a=-1,b=-1,c=-1;
for (int l=0;l<N;l++) {
for (int r=l+1;r<N;r++) {
long long need=A-(v[l]+v[r]+1);
auto mid=st.upper_bound(need);
if (mid==st.end()) continue;
if (*mid==v[l]) mid=st.upper_bound(*mid);
if (mid==st.end()) continue;
if (*mid==v[r]) mid=st.upper_bound(*mid);
if (mid==st.end()) continue;
//cout<<v[l]<<' '<<*mid<<' '<<v[r]<<endl;
long long chk=*mid+v[l]+v[r];
if (chk>=A && chk<=2*A) {
a=l+1; b=mp[*mid]; c=r+1; break;
}
}
}
if (a==-1) impossible();
vector<int> ans;
ans.push_back(a); ans.push_back(b); ans.push_back(c);
//cout<<a<<' '<<b<<' '<<c;
answer(ans);
return;
}
