Cod sursa(job #374795)

Utilizator ioraIoana Radu iora Data 18 decembrie 2009 13:07:04
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.93 kb
#include<cstdio>
const int N=1<<19;
const int MAX= - (1<<15);
const int M=1<<24;
int n,k,i,st,dr,a[N],dq[N];
char s[M];
inline void stanga(int i)
{
	if(i-dq[st]==k) st++;
}

inline void dreapta(int i)
{
	while(st<=dr&&a[i]<=a[dq[dr]]) dr--;
	dq[++dr]=i;
}

int main()
{
	freopen("secventa.in","r",stdin);
	freopen("secventa.out","w",stdout);
	
	scanf("%d %d\n",&n,&k);
	fgets(s,7*n,stdin);
	
	int x=0, semn=1, nr=0;
	for(i=0;s[i]&&s[i]!='\n';++i)
	{
		if(s[i]=='-') 
		{
			semn=-1;
			continue;
		}
		
		if(s[i]==' ')
		{
			a[++nr]=x*semn;
			x=0;
			semn=1;
			continue;
		}
		
		x=x*10+s[i]-'0';
	}
	
	if(nr!=n) a[++nr]=x*semn;
	st=1;
	dr=0;
	
	for(i=0;i<k;++i)
		dreapta(i);
	int max=MAX;
	int stm,drm;
	for(i=k;i<=n;++i)
	{
		stanga(i);
		dreapta(i);
		if(a[dq[st]]>max) 
		{ 
			stm=i-k+1;
			drm=i;
			max=a[dq[st]];
		}
	}
	
	printf("%d %d %d",stm,drm,max);
	return 0;
}