// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
using namespace std;

int main() {
	int n, a, miss, cur;
    cin>>n>>a>>miss;
    vector<int> tav(n);
    vector<int> ki;
    for(int i=0; i<n; i++){
        cin>>tav[i];
    }
    cur=tav[a-1];
    for(int i=a-1; i>=0; i--){
        if(cur-tav[i]>=miss){
            ki.push_back(i);
            cur=tav[i];
        }
    }
     for(int i=a-1; i<n; i++){
        if(tav[i]-cur>=miss){
            ki.push_back(i);
            cur=tav[i];
        }
    }
    cout<<ki.size()<<endl;
    sort(ki.begin(), ki.end());
    for(auto z:ki){
        cout<<z+1<<" ";
    }
}