Cod sursa(job #2911353)

Utilizator Deleanu_LucaDeleanu Luca Deleanu_Luca Data 28 iunie 2022 18:12:39
Problema Cautare binara Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.16 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("cautbin.in");
ofstream fout("cautbin.out");

int n,v[100001],m,i,x,st,dr,mij,c,poz;

int main()
{
    fin>>n;
    for(i=1; i<=n; i++)
        fin>>v[i];
    fin>>m;
    for(i=1; i<=m; i++)
    {
        fin>>c>>x;
        st=1; dr=n; poz=-1;
        while(st<=dr)
        {
            mij=(st+dr)/2;
            if(c==0)
            {
                if(x==v[mij])
                {
                    poz=mij;
                    st=mij+1;
                }
                else if(x<mij)
                {
                    st=mij+1;
                }
                else dr=mij-1;
            }
            else if(c==1)
            {
                if(x>=v[mij])
                {
                    poz=mij;
                    st=mij+1;
                }
                else dr=mij-1;
            }
            else
            {
                if(x<=v[mij])
                {
                    poz=mij;
                    dr=mij-1;
                }
                else st=mij+1;
            }
        }
        fout<<poz<<'\n';
    }
    return 0;
}