#include <bits/stdc++.h>
/*
Karya anak bangsa yang paling agung
Author : Yohandi or... bukan..
*/
#define fs first
#define sc second
#define pb push_back
#define eb emplace_back
#define all(a) a.begin(),a.end()
#define lb(a,x) (lower_bound(all(a),x)-a.begin())
#define ub(a,x) (upper_bound(all(a),x)-a.begin())
#define rep(a,x,y) for(int a=(int)x;a<=(int)y;++a)
#define repd(a,x,y,d) for(int a=(int)x;a<=(int)y;a+=d)
#define res(a,x,y) for(int a=(int)x;a>=(int)y;--a)
#define resd(a,x,y,d) for(int a=(int)x;a>=(int)y;a-=d)
// Ordered Set, Ordered Multiset
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define o_set tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>
#define o_multiset tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>
using namespace __gnu_pbds;
// .order_of_key(x) -> Number of elements less than x
// * .find_by_order(k) -> Kth smallest element (0-based)
// .erase(x) -> Remove all elements equal to x
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
using lint=long long;
mt19937 rng(time(NULL));
lint Power(lint A,lint B,lint C){
if(!B) return 1LL;
lint tmp=Power(A,B>>1,C);
return tmp*tmp%C*(B&1?A:1)%C;
}
int T,N,S,Le,Ri,Id;
int Par[1111111][21];
lint K,Ans;
lint V[1111111],D[1111111];
pair<int,int> P[1111111];
int Ancestor(int U,int Diff){
for(int j=log2(N+1);j>=0;--j){
if(Diff&(1<<j))
U=Par[U][j];
}
return U;
}
int main(){
// ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
T=1;
// cin>>T;
rep(t,1,T){
cin>>N>>S>>K;
for(int i=1;i<=N-1;++i){
cin>>D[i];
D[i]+=D[i-1];
}
for(int i=1;i<=N;++i){
cin>>V[i];
V[i]+=V[i-1];
}
Le=1; Ri=1;
for(int i=1;i<=N;++i){
while(Le<=i&&D[i-1]-D[Le-1]>K) Le++;
while(Ri<=N&&D[Ri-1]-D[i-1]<=K) Ri++;
P[Le].fs=Ri;
P[Le].sc=i;
}
for(int i=1;i<=N;++i){
if(P[i].fs==0)
P[i]=P[i-1];
}
P[N+1]=P[N];
V[N+1]=V[N];
memset(Par,-1,sizeof(Par));
for(int i=1;i<=N+1;++i) Par[i][0]=P[i].fs;
for(int j=1;j<=log2(N);++j)
for(int i=1;i<=N+1;++i)
if(Par[i][j-1]!=-1&&Par[Par[i][j-1]][j-1]!=-1)
Par[i][j]=Par[Par[i][j-1]][j-1];
for(int i=1;i<=N;++i){
if(Ans<V[Ancestor(i,S)-1]-V[i-1]){
Ans=V[Ancestor(i,S)-1]-V[i-1];
Id=i;
}
}
cout<<S<<endl;
for(int i=1;i<=S;++i){
if(i!=1) cout<<" ";
cout<<P[Id].sc;
Id=P[Id].fs;
}
cout<<"\n";
}
return 0;
}
