#include <fstream>
using namespace std;
ifstream in("secv2.in");
ofstream out("secv2.out");
int n,k,i,v[50001],s[50001],smin=25000,smax=-25000*50000,pi,pf,ppi;
int main()
{in>>n>>k;
   for(i=1;i<=n;i++)
   {in>>v[i];
      s[i]=s[i-1]+v[i];
      if(i>=k && smin>s[i-k])
      {smin=s[i-k];
         ppi=i-k+1;}
      if(i>=k && smax<s[i]-smin)
      {smax=s[i]-smin;
         pf=i;
         pi=ppi;}}
   out<<pi<<' '<<pf<<' '<<smax;
   out.close();
   return 0;
}