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

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();
        PriorityQueue<Stock> queue = new PriorityQueue<>();
        queue.add(new Stock(0, sc.nextInt()));
        int max = 0;
        int left = 0;
        int right = 0;
        for (int i = 1; i < n; i++) {
            int x = sc.nextInt();
            while (i - queue.peek().day > d) {
                queue.poll();
            }
            int diff = x - queue.peek().amount;
            if (max < diff) {
                max = diff;
                left = queue.peek().day;
                right = i;
            }
            queue.add(new Stock(i, x));
        }
        System.out.println(max * k);
        if (max > 0) {
            System.out.println(left + " " + right);
        }
    }
    
    static class Stock implements Comparable<Stock> {
        int day;
        int amount;
        
        public Stock(int day, int amount) {
            this.day = day;
            this.amount = amount;
        }
        
        public int compareTo(Stock another) {
            if (amount == another.amount) {
                return day - another.day;
            } else {
                return amount - another.amount;
            }
        }
    }
}

class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    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 int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}