#include <iostream.h>
#include <fstream.h>

fstream f("secv2.in",ios::in),g("secv2.out",ios::out);

long n,k,i,j,suma=-2000000000,ind1,ind2,cur,var;
int *v;

void SumaK(int i,int k)
{cur=0;
while(k) {cur+=v[i++]; k--;}
}

void inline comp()
{ if(cur>suma) {ind1=i; ind2=j; suma=cur;} }

int main()
{f>>n; f>>k;
v=new int[n+1];
for(i=1;i<=n;i++)
f>>v[i];
j=n; var=n;
for(i=1;i<=n-k+1;i++) {SumaK(i,k); comp(); 
for(j=i+k;j<=var;j++)   {cur+=v[j]; comp();}
           var=ind2;         } 
delete v;
g<<ind1<<" "<<ind2<<" "<<suma; }