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

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int d = sc.nextInt();
        long k = sc.nextInt();
        Price[] prices = new Price[n];
        TreeSet<Price> target = new TreeSet<>();
        prices[0] = new Price(0, sc.nextInt());
        target.add(prices[0]);
        int max = 0;
        int start = 0;
        int end = 0;
        for (int i = 1; i < n; i++) {
            prices[i] = new Price(i, sc.nextInt());
            if (i - d - 1 >= 0) {
                target.remove(prices[i - d - 1]);
            }
            if (prices[i].price - target.first().price > max) {
                max = prices[i].price - target.first().price;
                start = target.first().day;
                end = i;
            }
            target.add(prices[i]);
        }
        if (max == 0) {
            System.out.println(0);
        } else {
            System.out.println(max * k);
            System.out.println(start + " " + end);
        }
    }
    
    static class Price implements Comparable<Price> {
        int day;
        int price;
        
        public Price(int day, int price) {
            this.day = day;
            this.price = price;
        }
        
        public int hashCode() {
            return day;
        }
        
        public boolean equals(Object o) {
            Price p = (Price)o;
            return day ==  p.day && price == p.price;
        }
        
        public int compareTo(Price another) {
            if (price == another.price) {
                return day - another.day;
            } else {
                return price - another.price;
            }
        }
        public String toString() {
            return day + ":"  + price;
        }
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String nextLine() throws Exception {
        return br.readLine();
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}