Cod sursa(job #1254940)

Utilizator VladutZ94FMI Chichirau Vlad Vasile VladutZ94 Data 3 noiembrie 2014 19:49:06
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.53 kb
#include <cstdio>

using namespace std;

int n,v[10000];

struct cerinta
{
    bool da;
    int val;
}a1,a2,a0;

void citire()
{
    a0.da=false;
    a1.da=false;
    a2.da=false;

    int x,m;

    freopen("cautbin.in","r",stdin);

    scanf("%d",&n);
    for(int i=1;i<=n;i++)
        scanf("%d",&v[i]);
    scanf("%d",&m);
    for(int i=1;i<=m;i++)
    {
        scanf("%d",&x);
        if(x==0)
        {
            a0.da=true;
            scanf("%d",&a0.val);
        }
        if(x==1)
        {
            a1.da=true;
            scanf("%d",&a1.val);
        }
        if(x==2)
        {
            a2.da=true;
            scanf("%d",&a2.val);
        }
    }
}

int cautbin0(int x)
{
    int poz=1, pas=1<<21;
    while(pas>>=1)
    {
        if(pas+poz<n && v[pas+poz]<=x)
            poz+=pas;
    }
    if(v[poz]==a0.val)
        return poz;
    return -1;
}

int cautbin1(int x)
{
    int poz=1, pas=1<<21;
    while(pas>>=1)
    {
        if(pas+poz<n && v[pas+poz]<=x)
            poz+=pas;
    }
    return poz;
}

int cautbin2(int x)
{
    int poz=1, pas=1<<21;
    while(pas>>=1)
    {
        if(pas+poz<n && v[pas+poz]<x)
            poz+=pas;
    }
     if(v[poz]<x)
        poz++;
    return poz;
}

int main()
{
    int x;
    freopen("cautbin.out","w",stdout);
    citire();

    if(a0.da==true)
    printf("%d\n",cautbin0(a0.val));

    if(a1.da==true)
    printf("%d\n",cautbin1(a1.val));

    if(a2.da==true)
    printf("%d\n",cautbin2(a2.val));

    return 0;
}