#include <fstream>

using namespace std;

long long int N,K,Sum[50005],i,Mini,Raspuns,Inceput,Sfarsit,X,Pozmin;

int main()
{
    ifstream fin("secv2.in"); ofstream fout("secv2.out");

    fin>>N>>K;
    for(i=1;i<=N;++i) {fin>>X; Sum[i]=Sum[i-1]+X;}
    for(i=1;i<=K-1;++i)
        if(Sum[i]<Mini) {Mini=Sum[i]; Pozmin=i;}
    if(Sum[K]>Raspuns) Raspuns=Sum[K];
    i=Pozmin+K;
    for(;i<=N;++i)
    {
        if(Sum[i]-Mini>Raspuns) {Raspuns=Sum[i]-Mini; Inceput=Pozmin+1; Sfarsit=i;}
        if(Sum[i]<Mini) {Mini=Sum[i]; Pozmin=i; i=Pozmin+K;}
    }
    fout<<Inceput<<' '<<Sfarsit<<' '<<Raspuns;

    fin.close (); fout.close();
    return 0;
}