Cod sursa(job #411979)

Utilizator cioboata.iCioboata Ioan Liviu cioboata.i Data 5 martie 2010 11:50:53
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.78 kb
#include<stdio.h>
const int N=1<<17;
int n,v[N];

int caut0(int a)
{
	int i,pas=N;
	for(i=0;pas;pas>>=1)
		if(i+pas<=n && v[i+pas]<=a)
			i+=pas;
	if(i==0) return -1;
	return i;
}

int caut1(int a)
{
	int i,pas=N;
	for(i=0;pas;pas>>=1)
		if(i+pas<=n && v[i+pas]<=a)
			i+=pas;
	return i;
} 
int caut2(int a)
{
	int i,pas=N;
	for(i=0;pas;pas>>=1)
		if(i+pas<=n && v[i+pas]<a)
			i+=pas;
	return i+1;
}
int main()
{
	freopen("cautbin.in","r",stdin);
	freopen("cautbin.out","w",stdout);
	int i,t,intr,x;
	scanf("%d",&n);
	for(i=1;i<=n;i++)
		scanf("%d",&v[i]);
	scanf("%d",&t);
	for(i=1;i<=t;i++)
	{
		scanf("%d%d",&intr,&x);
		if(intr==0) printf("%d\n",caut0(x));
		if(intr==1) printf("%d\n",caut1(x));
		if(intr==2) printf("%d\n",caut2(x));
	}
	return 0;
}