Cod sursa(job #1106857)

Utilizator CiurezAndreiCiurez Marius-Andrei CiurezAndrei Data 13 februarie 2014 11:53:07
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.17 kb
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int n,m,i,st,dr,mid,q,v[100002],x;
int main()
{
    f>>n;
    for(i=1;i<=n;i++)
        f>>v[i];
    f>>m;
    for(i=1;i<=m;i++){
        f>>q>>x;
        if(q==0){
            st=1;dr=n;
            while(st<=dr){
                mid=(st+dr)/2;
                if(x<v[mid])
                    dr=mid-1;
                    else
                    st=mid+1;
            }
        if(v[dr]!=x)
            g<<-1;
            else
            g<<dr<<'\n';
        }
        else
            if(q==1){
             st=1;dr=n;
            while(st<=dr){
                mid=(st+dr)/2;
                if(x<v[mid])
                    dr=mid-1;
                    else
                    st=mid+1;
            }
            g<<dr<<'\n';
    }
        else
            if(q==2){
            st=1;dr=n;
            while(st<=dr){
                mid=(st+dr)/2;
                if(x<=v[mid])
                    dr=mid-1;
                    else
                    st=mid+1;
            }
            g<<st<<'\n';
            }
    }
    return 0;
}