#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,d,k,cnt=0,mx=0;
pair<ll,ll> a[100005];
int main(){
//	freopen("stock.in","r",stdin);
//	freopen("stock.out","w",stdout);
	cin>>n>>d>>k;
	for(int i=0,p;i<n;i++){
		cin>>p;
		if(p>mx)mx=p,a[cnt++]={i,p};
	}
	if(cnt==1){
		cout<<0;
		return 0;
	}
	ll mx=0,I,J;
	for(int i=0;i<cnt;i++){
		for(int j=i+1;a[j].first-a[i].first<=d&&j<cnt;j++){
			ll x=a[j].second-a[i].second;
			if(x>mx)mx=x,I=a[i].first,J=a[j].first;
		}
	}
	cout<<mx*k<<endl<<I<<" "<<J;
}