/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Main
{
    public static void main (String[] args) throws java.lang.Exception
    {
        // your code goes here
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] line = br.readLine().split(" ");
        
        int  N = Integer.parseInt(line[0]);
        int  D = Integer.parseInt(line[1]);
        long K = Long.parseLong(line[2]);
        
        ArrayList<Long> map = new ArrayList<Long>();
        for(int i=0;i<N;i++){
            map.add(Long.parseLong(br.readLine()));
        }
        Ans ans = new Ans();
        for(int i=0;i<N-D;i++){
            Ans tmp = calc(map,i,i+D);
            if(tmp.getDiff()>ans.getDiff()){
                ans = tmp;
                i=ans.start;
            }
        }
        
        if(ans.getDiff()==0){
            System.out.println(0);
        }else{
            System.out.println(K*ans.getDiff());
            System.out.println(ans.start + " " + ans.end);
        }
    }
    
    private static Ans calc(ArrayList<Long> map,int s,int d){
        int min=Integer.MAX_VALUE,max=0;
        long min_c = Long.MAX_VALUE;
        long max_c = 0l;
        Ans ans = new Ans();
        for(int i=s,size=map.size();i<=d&&i<size;i++){
            long t = map.get(i);
            if(min_c > t){
                min = i;
                min_c = t;
            }
            if(max_c < t){
                max = i;
                max_c = t;
                ans.start = min;
                ans.start_c = min_c;
                ans.end   = max;
                ans.end_c = max_c;
            }
        }
        return ans;
    }
    
    private static class Ans{
        int start;
        long start_c;
        int end;
        long end_c;
        public long getDiff(){
            return end_c-start_c;
        }
    }
}