using System;
using System.Linq;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Text;
using System.Net;

    
public class Program
{
    public void Proc() {
        int[] inpt = Reader.ReadLine().Split(' ').Select(a=>int.Parse(a)).ToArray();

        int dayCount = inpt[0];
        int amount = inpt[2];
        int range = inpt[1];

        SortedDictionary<int, Queue<int>> minDic1 = new SortedDictionary<int, Queue<int>>();
        SortedDictionary<int, Queue<int>> maxDic1 = new SortedDictionary<int, Queue<int>>();
        SortedDictionary<int, Queue<int>> minDic2 = new SortedDictionary<int, Queue<int>>();
        SortedDictionary<int, Queue<int>> maxDic2 = new SortedDictionary<int, Queue<int>>();

        int ans = 0;
        int fromIdx = 0;
        int toIdx = 0;
        for(int i=0; i<dayCount; i++) {
            int prev = Math.Max(0, i-range);
            int tmp = int.Parse(Reader.ReadLine());
            if(!minDic1.ContainsKey(tmp)) {
                minDic1.Add(tmp, new Queue<int>());
            }
            minDic1[tmp].Enqueue(i);

            if(!minDic2.ContainsKey(tmp)) {
                minDic2.Add(tmp, new Queue<int>());
            }
            minDic2[tmp].Enqueue(i);

            if(!maxDic1.ContainsKey(tmp*-1)) {
                maxDic1.Add(tmp*-1, new Queue<int>());
            }
            maxDic1[tmp*-1].Enqueue(i);

            if(!maxDic2.ContainsKey(tmp*-1)) {
                maxDic2.Add(tmp*-1, new Queue<int>());
            }
            maxDic2[tmp*-1].Enqueue(i);

            while(minDic1.Count>0&&minDic1.First().Value.Peek() < prev) {
                minDic1.First().Value.Dequeue();
                if(minDic1.First().Value.Count <= 0) {
                    minDic1.Remove(minDic1.First().Key);
                }
            }

            while(maxDic1.Count>0 && (maxDic1.First().Value.Peek() < minDic1.First().Value.Peek() || maxDic1.First().Value.Peek() < prev)) {
                maxDic1.First().Value.Dequeue();
                if(maxDic1.First().Value.Count <= 0) {
                    maxDic1.Remove(maxDic1.First().Key);
                }
            }

            while(maxDic2.Count>0&&maxDic2.First().Value.Peek() < prev) {
                maxDic2.First().Value.Dequeue();
                if(maxDic2.First().Value.Count <= 0) {
                    maxDic2.Remove(maxDic2.First().Key);
                }
            }

            while(minDic2.Count > 0&&(minDic2.First().Value.Peek() > maxDic2.First().Value.Peek() || minDic2.First().Value.Peek() <prev)) {
                minDic2.First().Value.Dequeue();
                if(minDic2.First().Value.Count <= 0) {
                    minDic2.Remove(minDic2.First().Key);
                }
            }


            if(maxDic1.Count > 0 && minDic1.Count > 0 && maxDic1.First().Key*-1 - minDic1.First().Key > ans) {
                ans = maxDic1.First().Key * -1 - minDic1.First().Key;
                fromIdx = minDic1.First().Value.Peek();
                toIdx = maxDic1.First().Value.Peek();
            }
            if(maxDic2.Count > 0 && minDic2.Count > 0 && maxDic2.First().Key*-1 - minDic2.First().Key > ans) {
                ans = maxDic2.First().Key * -1 - minDic2.First().Key;
                fromIdx = minDic2.First().Value.Peek();
                toIdx = maxDic2.First().Value.Peek();
            }
        }
        Console.WriteLine(ans*amount);
        if(ans > 0) {
            Console.WriteLine(fromIdx + " " + toIdx);
        }


    }


    public class Reader {
        public static bool IsDebug = false;
        private static System.IO.StringReader SReader;
        private static string InitText = @"




5 4 100
1
2
1
2
1




";
        public static string ReadLine() {
            if(IsDebug) {
                if(SReader == null) {
                    SReader = new System.IO.StringReader(InitText.Trim());
                }
                return SReader.ReadLine();
            } else {
                return Console.ReadLine();
            }
        }
    }
    public static void Main(string[] args)
    {
        #if DEBUG
        Reader.IsDebug = true;
        #endif
        Program prg = new Program();
        prg.Proc();
    }
}