Cod sursa(job #470227)

Utilizator matei_cChristescu Matei matei_c Data 12 iulie 2010 13:52:47
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.81 kb
#include<stdio.h>
int n,v[100001];
int caut0(int x)
{
	int i,pas=(1<<16);
	for(i=0;pas!=0;pas>>=1)
		if(i+pas<=n && v[i+pas]<=x)
			i+=pas;
	if(v[i]!=x)
		return -1;
	return i;
}
int caut1(int x)
{
	int i,pas=(1<<16);
	for(i=0;pas!=0;pas>>=1)
		if(i+pas<=n && v[i+pas]<=x)
			i+=pas;
	return i;
}	
int caut2(int x)
{
	int i,pas=(1<<16);
	for(i=0;pas!=0;pas>>=1)
		if(i+pas<=n && v[i+pas]<x)
			i+=pas;
	return i+1;
}
	
int main()
{
	int i,x,tip,m;
	freopen("cautbin.in","r",stdin);
	freopen("cautbin.out","w",stdout);
	scanf("%d",&n);
	for(i=1;i<=n;i++)
		scanf("%d",&v[i]);
	scanf("%d",&m);
	for(i=1;i<=m;i++)
	{
		scanf("%d%d",&tip,&x);
		if(tip==0)
			printf("%d\n",caut0(x));
		if(tip==1)
			printf("%d\n",caut1(x));
		if(tip==2)
			printf("%d\n",caut2(x));
	}	
	return 0;
}