#include <fstream>
using namespace std;
ifstream f("secv2.in");
ofstream g("secv2.out");
int i,j,n,k,x,y,v[50005];
int main()
{

    f>>n>>k;
    for (i=1;i<=n;++i)
        f>>v[i],v[i]+=v[i-1];

   int st=1,dr=k,sum=v[k],M=v[k];

   for(i=k+1;i<=n;++i)
        {
            if (v[i]-v[i-k] > sum + v[i]-v[i-1])
                {
                    st = i - k + 1;
                    dr = i ;
                    sum= v[i] - v[i-k];
                }
            else
                {
                    sum+=v[i]-v[i-1];
                    dr=i;
                }
            if (sum>M)
                M=sum,x=st,y=dr;
        }

    g<<x<<" "<<y<<" "<<M;
    return 0;
}