Cod sursa(job #523119)

Utilizator ioanabIoana Bica ioanab Data 17 ianuarie 2011 09:42:15
Problema Secventa Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.72 kb
#include <fstream>
using namespace std;

ifstream in ("secventa.in");
ofstream out("secventa.out");

const int N=500005;

int v[N],dq[N],n,k,st,dr;

void dreapta(int i)
{
	while(st<=dr && v[dq[dr]]>=v[i])
		--dr;
}

void adauga(int i)
{
	dq[++dr]=i;
}

void stanga(int i)
{
	if(i-dq[st]==k)
		++st;
}

int main()
{

	int i,poz1,poz2,max;
	in>>n>>k;
	for(i=1;i<=n;i++)
		in>>v[i];
	st=1;
	dr=0;
	
	for(i=1;i<=k;i++)
	{
		dreapta(i);
		dq[++dr]=i;
	}
	max=v[dq[st]];
	poz1=1;
	poz2=i;
	for(;i<=n;i++)
	{
		
		stanga(i);
		dreapta(i);
		adauga(i);
		if (v[dq[st]]>max)
		{
			max=v[dq[st]];
			poz1=i-k+1;
			poz2=i;
		}

	}
	
	out<<poz1<<" "<<poz2<<" "<<max<<"\n";
	return 0;
}