#include <iostream>
#include <fstream>
#include <limits.h>
using namespace std;
ifstream f("secv2.in");
ofstream g("secv2.out");
int n, v[50001],k,i,smax,best,minn,p,st,dr;
int main()
{
    f>>n>>k; smax=INT_MIN;
    for(i=1; i<=n; ++i)
    {f>>v[i];
      v[i]=v[i-1]+v[i];
       if(i>=k)
       {best=v[i]-minn;
        if(minn>v[i-k]) {minn=v[i-k]; p=i-k+1;}
        if(smax<best) {smax=best; dr=i; st=p;}
       }
    }
   g<<st<<' '<<dr<<' '<<smax;
    f.close();
    g.close();
    return 0;
}