Cod sursa(job #2285322)

Utilizator RaaaulBaciulescu Raul Raaaul Data 18 noiembrie 2018 14:21:03
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.64 kb
#include<fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,a[100005];
int main()
{
    int i,m,x,y;
    fin>>n;
    for(i=1; i<=n; i++)
        fin>>a[i];
    fin>>m;
    for(i=1; i<=m; i++)
    {
        fin>>y>>x;
        if(y==0)
        {
            int st=1,dr=n,rasp=n+1,mij;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(a[mij]>x)
                {
                    rasp=mij;
                    dr=mij-1;
                }
                else
                {
                    st=mij+1;
                }
            }
            if(a[rasp-1]==x) fout<<rasp-1<<"\n";
            else fout<<-1<<"\n";
        }
        if(y==1)
            {
            int st=1,dr=n,rasp=n+1,mij;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(a[mij]>x)
                {
                    rasp=mij;
                    dr=mij-1;
                }
                else
                {
                    st=mij+1;
                }
            }
            fout<<rasp-1<<"\n";
            }
        if(y==2)
            {
                int st=1,dr=n,rasp=n+1,mij;
                while(st<=dr)
                {
                    mij=(st+dr)/2;
                    if(a[mij]>=x)
                    {
                        rasp=mij;
                        dr=mij-1;
                    }
                    else
                    {
                        st=mij+1;
                    }
                }
                fout<<rasp<<"\n";
            }
    }
}