#include<iostream>
using namespace std;
const int N=1e5+10; int a[N],q[N];
int main() {
	//freopen("stock.in","r",stdin);
	//freopen("stock.out","w",stdout);
	ios::sync_with_stdio(false),cin.tie(nullptr);
	int n,d,k,h=1,t=0,ans=0,b,s; cin>>n>>d>>k;
	for(int i=1;i<=n;i++) {
		cin>>a[i];
		while(h<=t&&a[q[t]]>a[i]) t--;
		q[++t]=i;
		while(h<=t&&q[h]<i-d) h++;
		if(a[i]-a[q[h]]>ans) ans=a[i]-a[q[h]],b=q[h],s=i;
	}
	if(!ans) cout<<0;
	else cout<<1ll*k*ans<<'\n'<<b-1<<' '<<s-1;
	return 0;
}