#include<stdio.h>
long n,i,j,sc,smax,pim,pi,pfm,k,x[50001],sk;
int main()
{
	freopen("secv2.in","r",stdin);
	freopen("secv2.out","w",stdout);
	scanf("%ld",&n);
	for(i=1;i<=k;i++)
	{
		scanf("%ld",&x[i]);
		sc+=x[i];
	}
	sk=sc;
	smax=sc;pim=pi=1;pfm=k;
	for(i=k+1;i<=n;i++)
	{
		scanf("%ld",&x[i]);
		sk+=x[i]-x[i-k];
		if(sk>sc+x[i])
		{
			sc=sk;
			pi=i-k+1;
		}
		else
			sc+=x[i];
		if(sc>smax)
		{
			pim=pi;
			pfm=i;
			smax=sc;
		}
	}
	printf("%ld %ld %ld",pim-1,pfm-1,smax);
	return 0;
}