Cod sursa(job #3204663)

Utilizator IrisBusoiu123Iris Busoiu IrisBusoiu123 Data 17 februarie 2024 11:23:17
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.41 kb
#include <fstream>
using namespace std;
ifstream cin("cautbin.in");
ofstream cout("cautbin.out");
int n,v[200005],ras,m,a,b,st,dr,mij;
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>v[i];
    cin>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>a>>b;
        st=1;
        dr=n;
        ras=-1;
        if(a==0)
        {
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]==b)
                {
                    ras=mij;
                    st=mij+1;
                }
                else if(b>v[mij])
                    st=mij+1;
                else
                    dr=mij-1;
            }
            cout<<ras<<"\n";
        }
        else if(a==1)
        {
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=b)
                {
                    ras=mij;
                    st=mij+1;
                }
                else
                    dr=mij-1;
            }
            cout<<ras<<"\n";
        }
        else
        {
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]>=b)
                {
                    ras=mij;
                    dr=mij-1;
                }
                else
                    st=mij+1;
            }
            cout<<ras<<"\n";
        }
    }
    return 0;
}