#include"bits/stdc++.h"

//#include<bits/stdc++.h>
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 100000000000;

//最大を求めるセグメントtree
int n, dat[2 * 100002 - 1];

void init(int n_) {
	n = 1;
	while (n < n_)n *= 2;
	REP(i, 2 * n - 1)dat[i] = -1;
}

void update(int k, int a) {
	k += n - 1;
	dat[k] = a;
	while (k > 0) {
		k = (k - 1) / 2;
		dat[k] = max(dat[k * 2 + 1], dat[k * 2 + 2]);
	}
}

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

int main() {
	int n_, d, k;
	int x[100002];
	cin >> n_ >> d >> k;
	init(n_);
	REP(i, n_) {
		cin >> x[i];
		update(i, x[i]);
	}
	int max_ = 0;
	int sub = 0;
	int l = -1;
	int r = -1;
	REP(i, n_) {
		max_ =query(i, i + d, 0, 0, n_);
		if (sub < max_ - x[i]) {
			l = i;
			sub = max_ - x[i];
			rep(j, 1, d + 1) if (x[i + j] == max_) {
				r = i + j; break;
			}
		}
	}
	ll price = sub*k;
	if (price == 0) { print(0); return 0; }
	print(price);
	cout << l <<" "<< r << endl;
	return 0;
}