import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.NoSuchElementException;

public class Main{
	int N,D,K;
	int[] x;

	static final int INF = -((int)1e9+7);
	P[] segment;
	int size;

	private class P{
		int i,v;
		public P(int i,int v){
			this.i = i;
			this.v = v;
		}
	}

	public void segInit(int N){
		size = 1;
		while(size < N){
			size <<= 1;
		}

		segment = new P[size*2];
		for(int i = 0;i < size * 2;i++){
			segment[i] = new P(INF,INF);
		}
	}

	public void segUpdate(int i,int a){
		P tmp = new P(i,a);
		i = size + i - 1;
		segment[i] = tmp;

		while(i > 0){
			i = (i-1)>>1;
			int i1 = i*2+1;
			int i2 = i*2+2;
			if (segment[i1].v < segment[i2].v){
				segment[i] = segment[i2];
			}else if (segment[i1].v > segment[i2].v){
				segment[i] = segment[i1];
			}else if(segment[i1].i <= segment[i2].i){
				segment[i] = segment[i1];
			}else{
				segment[i] = segment[i2];
			}
		}
	}

	public P segQuery(int a,int b,int k,int l,int r){
		if(r <= a || b <= l)return new P(INF,INF);
		if(a <= l && r <= b)return segment[k];

		P left = segQuery(a,b,2*k+1,l,(l+r)/2);
		P right = segQuery(a,b,2*k+2,(l+r)/2,r);

		if (left.v == INF && right.v == INF)return new P(INF,INF);
		if(left.v == INF)return right;
		if(right.v == INF)return left;
		if(left.v < right.v)return right;
		if(left.v > right.v)return left;
		if(left.i <= right.i)return left;
		else return right;
	}

	public void solve() {
		N = nextInt();
		D = nextInt();
		K = nextInt();
		x = new int[N];
		for(int i = 0;i < N;i++){
			x[i] = nextInt();
		}

		segInit(N);
		for(int i = 0;i < N;i++){
			segUpdate(i,x[i]);
		}

		long ans = INF;
		int[] pair = {INF,INF};
		for(int i = 0;i < N - 1;i++){
			P ret = segQuery(i+1,Math.min(N, i+D+1),0,0,size);
			if (ans < ret.v-x[i]){
				ans = ret.v-x[i];
				pair[0] = i;
				pair[1] = ret.i;
			}
		}

		if(ans <= 0){
			out.println(0);
		}else{
			out.println(ans*K);
			out.println(pair[0] + " " + pair[1]);
		}
	}

	public static void main(String[] args) {
		out.flush();
		new Main().solve();
		out.close();
	}

	/* Input */
	private static final InputStream in = System.in;
	private static final PrintWriter out = new PrintWriter(System.out);
	private final byte[] buffer = new byte[2048];
	private int p = 0;
	private int buflen = 0;

	private boolean hasNextByte() {
		if (p < buflen)
			return true;
		p = 0;
		try {
			buflen = in.read(buffer);
		} catch (IOException e) {
			e.printStackTrace();
		}
		if (buflen <= 0)
			return false;
		return true;
	}

	public boolean hasNext() {
		while (hasNextByte() && !isPrint(buffer[p])) {
			p++;
		}
		return hasNextByte();
	}

	private boolean isPrint(int ch) {
		if (ch >= '!' && ch <= '~')
			return true;
		return false;
	}

	private int nextByte() {
		if (!hasNextByte())
			return -1;
		return buffer[p++];
	}

	public String next() {
		if (!hasNext())
			throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b = -1;
		while (isPrint((b = nextByte()))) {
			sb.appendCodePoint(b);
		}
		return sb.toString();
	}

	public int nextInt() {
		return Integer.parseInt(next());
	}

	public long nextLong() {
		return Long.parseLong(next());
	}

	public double nextDouble() {
		return Double.parseDouble(next());
	}
}