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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("secv2.in");
ofstream out("secv2.out");
int n,v[50005],k,s[50005],mx=-9999999999,mn=9999999999,poz,poz1,poz2;
int main()
{
in>>n>>k;
for(int i=1;i<=n;i++)
{
in>>v[i];
s[i]=v[i]+s[i-1];
}
for(int i=k;i<=n;i++)
{
if(s[i-k]<mn)
{
mn=s[i-k];
poz=i-k+1;
}
if(s[i]-mn>mx)
{
mx=s[i]-mn;
poz1=poz;
poz2=i;
}
}
cout<<poz1<<" "<<poz2<<" "<<mx;
}