Cod sursa(job #2151174)

Utilizator EpureCarlaEpure Carla EpureCarla Data 4 martie 2018 10:54:12
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.29 kb
#include <fstream>
//#include <iostream>
using namespace std;
ifstream cin("cautbin.in");
ofstream cout("cautbin.out");
int n,i,v[100001],k,st,dr,mij,a,b,ok=0;
int main()
{
    cin>>n;
    for(i=1; i<=n; i++)
        cin>>v[i];
    cin>>k;
    for(i=1; i<=k; i++)
    {
        cin>>a>>b;
        if(a==0)
        {
            st=1;
            dr=n;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=b)
                    st=mij+1,ok=1;
                else
                    dr=mij-1;
            }
            if(ok==0)
                cout<<-1<<'\n';
            else
                cout<<dr<<'\n';
        }
        if(a==1)
        {
            st=1;dr=n;ok=0;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]>b)
                    dr=mij-1;
                else
                    st=mij+1;
            }
            cout<<dr<<'\n';
        }
        if(a==2)
        {
            st=1;dr=n;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<b)
                    st=mij+1;
                else
                    dr=mij-1;
            }
            cout<<st<<'\n';
        }
    }
    return 0;
}