#include<fstream.h>
long n,k,i,val,start,st,dr,rez,a[50001],s[50001];
ifstream f("secv2.in");
ofstream g("secv2.out");
int main()
{
f>>n>>k;
for(i=1;i<=n;i++)
{
f>>a[i];
s[i]=s[i-1]+a[i];
}
rez=s[k];
st=1;
dr=k;
val=s[k];
start=1;
for(i=k+1;i<=n;i++)
{
val=val+a[i];
if(val<s[i]-s[i-k])
{
val=s[i]-s[i-k];
start=i-k+1;
}
if(rez<val)
{
rez=val;
st=start;
dr=i;
}
}
g<<st<<" "<<dr<<" "<<rez;
f.close();
g.close();
return 0;
}