Cod sursa(job #1425007)

Utilizator Bursucelthe coppice Bursucel Data 26 aprilie 2015 11:46:35
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.92 kb
#include <fstream>
using namespace std;
int n,v[1000001];
const int l=16;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
int cautbin0(int x)
{   int i=0,pas=1<<l;
    while(pas!=0)
    {   if(i+pas<=n && v[i+pas]<=x) i+=pas;
        pas/=2;
    }
    if(v[i]==x) return i;
    return -1;
}
int cautbin1(int x)
{   int i=0,pas=1<<l;
    while(pas!=0)
    {   if(i+pas<=n && v[i+pas]<=x) i+=pas;
        pas/=2;
    }
    return i;
}
int cautbin2(int x)
{   int i=0,pas=1<<l;
    while(pas!=0)
    {   if(i+pas<=n && v[i+pas]<x) i+=pas;
        pas/=2;
    }
    return 1+i;
}
int main ()
{   int m,tip,val;
    in>>n;
    for(int j=1;j<=n;j++)   in>>v[j];
    in>>m;
    for(int i=1;i<=m;i++)
    {   in>>tip>>val;
        if(tip==0) out<<cautbin0(val)<<'\n';
        if(tip==1) out<<cautbin1(val)<<'\n';
        if(tip==2) out<<cautbin2(val)<<'\n';
    }
    out.close();
    return 0;
}