Cod sursa(job #798801)

Utilizator cocoshilaClaudiu cocoshila Data 17 octombrie 2012 12:32:35
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.11 kb
#include<stdio.h>

long v[100001];
int x,nr,y,n,m;

int caut0(int x)
{
    int i=0,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=0,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=0,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;
	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",&y,&x);
        if (y==0)
        {
           nr=caut0(x);
            printf("%d\n",nr);
        }
       if (y==1)
       {
            nr=caut1(x);
            printf("%d\n",nr);
       }
       if (y==2)
        {
            nr=caut2(x);
            printf("%d\n",nr);
        }
   }
    return 0;
}