#include <fstream>
using namespace std;
ifstream cin("secv2.in");
ofstream cout("secv2.out");

long n,i,sbest(-1<<19),suma(0),sol1,sol2,k,Dq[60013],suma1,suma2,start,finish; 
int main () 
{ 
  cin>>n>>k;
  for (i=1;i<=n;++i) {
                      cin>>Dq[i];
                      Dq[i]+=Dq[i-1];
                      }
   sbest=Dq[k];
   for( i=k+1; i<=n; i++ ) {
                            suma1=Dq[i]-Dq[i-k];
                            suma2=suma+Dq[i]-Dq[i-1]; 
                            if(suma1>suma2) sol1=i-k+1 , sol2=i ,  suma=suma1;
                                       else suma=suma2 , sol2=i;
                            if(suma>sbest) sbest=suma , start=sol1 , finish=sol2;
                          }
                      
  cout<<start<<" "<<finish<<" "<<sbest;
return 0;
}