using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Globalization;
using System.Diagnostics;
using static System.Console;
using Pair = System.Collections.Generic.KeyValuePair<int, int>;

class Program
{
    static void Main()
    {
        SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
        new Program().Solve();
        Out.Flush();
    }
    Scanner cin = new Scanner();
    Random rnd = new Random();
    Stopwatch sw = new Stopwatch();
    readonly int[] dd = { 0, 1, 0, -1, 0 };
    readonly int mod = 1000000007;
    readonly string alfa = "abcdefghijklmnopqrstuvwxyz";

    int N, D, K;
    void Solve()
    {
        N = cin.Nextint; D = cin.Nextint; K = cin.Nextint;
        long MAX = 0;
        int l = 0, r = 1;
        int ans1 = 0, ans2 = 0;
        bool flag = false;
        var X = new int[N];
        for (int i = 0; i < N; i++)
        {
            X[i] = cin.Nextint;
        }
        int high = X[0]; int low = X[0];
        for (int i = 1; i < N; i++)
        {


            if (X[i] <= low)
            {
                l = i;
                r = i;
                low = X[i];
                high = X[i];
            }
            else
            {
                if (high < X[i])
                {
                    high = X[i];                    
                    r = i;
                }
            }
            if (MAX < high - low)
            {
                MAX = high - low;
                ans1 = l;
                ans2 = r;
                flag = true;
            }
            if (D < i + 1 - l)
            {
                low = int.MaxValue;
                for (int j = l + 1; j <= i; j++)
                {
                    if (X[j] <= low)
                    {
                        l = j;
                        low = X[j];
                        break;
                    } 
                }
            }

            //if(i < 50010 && 47890 < i)Console.WriteLine($"max={MAX} i={i} l={l} r={r} high={high} low={low}");
            //if (i == 20000) break;
        }

        if (flag)
        {
            WriteLine(K * MAX);
            WriteLine($"{ans1} {ans2}");
        }
        else
        {
            WriteLine(0);
        }
      
    }

}

class Scanner
{
    string[] s; int i;
    char[] cs = new char[] { ' ' };
    public Scanner() { s = new string[0]; i = 0; }
    public string[] Scan { get { return ReadLine().Split(); } }
    public int[] Scanint { get { return Array.ConvertAll(Scan, int.Parse); } }
    public long[] Scanlong { get { return Array.ConvertAll(Scan, long.Parse); } }
    public double[] Scandouble { get { return Array.ConvertAll(Scan, double.Parse); } }
    public string Next
    {
        get
        {
            if (i < s.Length) return s[i++];
            string st = ReadLine();
            while (st == "") st = ReadLine();
            s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
            i = 0;
            return Next;
        }
    }
    public int Nextint { get { return int.Parse(Next); } }
    public long Nextlong { get { return long.Parse(Next); } }
    public double Nextdouble { get { return double.Parse(Next); } }
}