Cod sursa(job #3151845)

Utilizator BOSSSTEFANPetrescu Ioan Stefan BOSSSTEFAN Data 23 septembrie 2023 00:17:50
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.25 kb
#include <fstream>

using namespace std;
ifstream cin("cautbin.in");
ofstream cout("cautbin.out");
int v[100001];
int main()
{
    int n,i;
    cin>>n;
    for(i=1;i<=n;i++)
        cin>>v[i];
    int m,a,b,mij,poz,st,dr;
    cin>>m;
    while(m>0)
    {
        m--;
        cin>>a>>b;
        if(a<2)
        {
            st=1;
            dr=n;
            poz=0;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=b)
                {
                    st=mij+1;
                    poz=mij;
                }
                else
                    dr=mij-1;
            }
            if(a==1)
                cout<<poz;
            else
            if(v[poz]==b)
                cout<<poz;
            else
                cout<<-1;
        }
        else
        {
            st=1;
            dr=n;
            poz=0;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]>=b)
                {
                    dr=mij-1;
                    poz=mij;
                }
                else
                    st=mij+1;
            }
            cout<<poz;
        }
        cout<<'\n';
    }
    return 0;
}