Cod sursa(job #2631220)

Utilizator Theo14Ancuta Theodor Theo14 Data 29 iunie 2020 15:04:34
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.09 kb
#include<fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");

int v[100002],n;

int cautbin0(int x)
{
    int st=1,dr=n,mij;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]<=x)
            st=mij+1;
        else
            dr=mij-1;
    }
    if(v[dr]==x)
        return dr;
    return -1;
}

int cautbin1(int x)
{
    int st=1,dr=n,mij;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]<=x)
            st=mij+1;
        else
            dr=mij-1;
    }
    return dr;
}

int cautbin2(int x)
{
    int st=1,dr=n,mij;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]<x)
            st=mij+1;
        else
            dr=mij-1;
    }
    return st;
}

int main()
{
    int m,i,t,x;
    f>>n;
    for(i=1;i<=n;i++)
        f>>v[i];
    f>>m;
    for(i=1;i<=m;i++)
    {
        f>>t>>x;
        if(t==0)
            g<<cautbin0(x);
        else
        if(t==1)
            g<<cautbin1(x);
        else
            g<<cautbin2(x);
        g<<'\n';
    }
    return 0;
}