package yukicoder;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

public class Q485 {
	static int N, D;
	static long K;
	static int[] x;

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		N = sc.nextInt();
		D = sc.nextInt();
		K = sc.nextInt();
		x = new int[N];
		for (int i = 0; i < N; ++i) {
			x[i] = sc.nextInt();
		}
		RMQ rmq = new RMQ(N);
		for (int i = 0; i < N; ++i) {
			rmq.setVal(i, x[i], i);
		}
		long maxProfit = 0;
		int srcDay = -1, dstDay = -1;
		for (int i = 0; i < N - 1; ++i) {
			RMQ.State s = rmq.query(i + 1, i + 1 + D, 0, rmq.n, 0);
			if (maxProfit < (s.price - x[i]) * K) {
				maxProfit = (s.price - x[i]) * K;
				srcDay = i;
				dstDay = s.day;
			}
		}
		if (maxProfit == 0) {
			System.out.println(0);
		} else {
			System.out.println(maxProfit);
			System.out.println(srcDay + " " + dstDay);
		}
	}

	static class RMQ {
		class State implements Comparable<State> {
			int day;
			long price;

			public State(int day, long price) {
				this.day = day;
				this.price = price;
			}

			@Override
			public int compareTo(State o) {
				if (price != o.price) {
					return -Long.compare(price, o.price);
				} else {
					return Long.compare(day, o.day);
				}
			}
		}

		int n;
		State[] val;
		long INF = Integer.MAX_VALUE / 10;

		public RMQ(int n_) {
			n = 1;
			while (n < n_)
				n *= 2;
			val = new State[2 * n - 1];
			Arrays.fill(val, new State((int) INF, -INF));
		}

		void setVal(int k, int price, int day) {
			k += n - 1;
			val[k] = new State(day, price);
			while (k > 0) {
				k = (k - 1) / 2;
				val[k] = max(val[2 * k + 1], val[2 * k + 2]);
			}
		}

		State query(int a, int b, int l, int r, int k) {
			if (b <= l || a >= r)
				return new State((int) INF, -INF);
			if (a <= l && r <= b)
				return val[k];
			else {
				State vl = query(a, b, l, (l + r) / 2, 2 * k + 1);
				State vr = query(a, b, (l + r) / 2, r, 2 * k + 2);
				return max(vl, vr);
			}
		}

		State max(State s1, State s2) {
			if (s1.compareTo(s2) < 0) {
				return new State(s1.day, s1.price);
			} else {
				return new State(s2.day, s2.price);
			}
		}
	}

	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}
}