Cod sursa(job #514447)

Utilizator ioanabIoana Bica ioanab Data 18 decembrie 2010 18:50:12
Problema Secventa Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.82 kb
#include <cstdio>
using namespace std;

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;
}

int main()
{
	freopen("secventa.in","r",stdin);
	freopen("secventa.out","w",stdout);
	int i,poz1,poz2,max;
	scanf("%d%d",&n,&k);
	for(i=1;i<=n;i++)
		scanf("%d",&v[i]);
	st=1;
	dr=0;
	max=-40000;
	for(i=1;i<=k;i++)
	{
		dreapta(i);
		dq[++dr]=i;
	}
	
	for(;i<=n;i++)
	{
		
		dreapta(i);
		adauga(i);
		
	}
	max=v[dq[1]];
	for(i=dr;i>=1;i--)
		if(dq[i]>n-k+1 && dq[i-1]<dq[i])
			dr--;
	for(i=2;i<=dr && dq[i]<=n-k+1;i++)
	{
		if(v[dq[i]]>max)
		{
			max=v[dq[i]];
			poz1=dq[i-1]+1;
			poz2=dq[i+1];
			if(poz2==0)
				poz2=n;
		}
	}
	printf("%d %d %d",poz1,poz2,max);
	return 0;
}