#include <iostream>
#include <fstream>
using namespace std;
int maxsum=- (1<<30),Min=1<<30,sum[50000],poz,start,finish;
int n,k;
ifstream f("secv2.in");
ofstream g("secv2.out");
int main()
{
    f >> n >> k ;
    int x;
    for(int i=1;i<=n;i++)
    {
        f >> x;
        sum[i]=sum[i-1]+x;
        if(i>=k)
        {
            if(sum[i-k]< Min)
            {
                Min=sum[i-k];
                poz=i-k;
            }
            if(sum[i]-Min>maxsum)
            {
                maxsum=sum[i]-Min;
                start=poz;
                finish=i;

            }
        }

    }
    g << start+1 << " " << finish << " " << maxsum << "\n";
    return 0;
}