Cod sursa(job #1059202)

Utilizator sorincusmareIacob Sorin sorincusmare Data 16 decembrie 2013 13:14:09
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.94 kb
#include <fstream>

using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int v[100001],n;
int caut0(int x)
{
    int pas=1<<16,i=0;
    while (pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
            i+=pas;
        pas/=2;
    }
    if(v[i]!=x) return -1;
    return i;
}
int caut1 (int x)
{
    int pas=1<<16,i=0;
    while (pas!=0)
    {
        if(i+pas<=n && v[i+pas]<=x)
            i+=pas;
        pas/=2;
    }
   return i;
}

int caut2 (int x) {
   int pas=1<<16,i=0;
    while (pas!=0){
    if(i+pas<=n && v[i+pas]<x)
       i+=pas;
       pas/=2;
    }
    return 1+i;
}
int main()
{
    int m,i,c,y;
    f>>n;
    for(i=1; i<=n; i++)
        f>>v[i];
    f>>m;
    for(i=1; i<=m; i++)
    {
        f>>c>>y;
        if(c==0)
            g << caut0(y) << "\n";
        if(c==1)
            g << caut1(y) << "\n";
        if(c==2)
            g << caut2(y) << "\n";
    }
}