using namespace std;
#include <fstream>
ifstream fin("secv2.in");
ofstream fout("secv2.out");
const int Nmax = 50001;
const int INF = 2000000000;

int s[Nmax];

int main()
{
    int i, n, k, smax = -INF, x = 0, y = -1, MIN = INF, pozMin, a;
    fin >> n >> k;
    for(i = 1; i < k; ++i)
    {
        fin >> a; s[i] = s[i-1] + a;
    }
    for(i = k; i <= n; ++i)
    {
        fin >> a; s[i] = s[i-1] + a;
        if(MIN > s[i-k]) MIN = s[i-k], pozMin = i - k;
        if(s[i] - MIN > smax) smax = s[i] - MIN, x = pozMin + 1, y = i;
    }
    fout << x << ' ' << y << ' ' << smax << '\n';
    return 0;
}