Cod sursa(job #3204592)

Utilizator marcandreicostinCostin marcandreicostin Data 17 februarie 2024 09:36:07
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.53 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,m,i,c,x,v[100005],st,dr,rez,mij;
int main()
{
    fin>>n;
    for(i=1; i<=n; i++)
        fin>>v[i];
    sort(v+1,v+n+1);
    fin>>m;
    for(i=1; i<=m; i++)
    {
        fin>>c>>x;
        st=1;
        dr=n;
        rez=-1;
        if(c==0)
        {
            while(st<dr)
            {
                mij=(st+dr)/2;
                if(v[mij]==x)
                {
                    rez=mij;
                    st=mij+1;
                }
                else if(v[mij]<x)
                    st=mij+1;
                else if(v[mij]>x)
                    dr=mij-1;
            }
            fout<<rez<<'\n';
        }
        else if(c==1)
        {
            while(st<dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=x)
                {
                    rez=mij;
                    st=mij+1;
                }
                else if(v[mij]>x)
                    dr=mij-1;
            }
            fout<<rez<<'\n';
        }
        else
        {
            while(st<dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<x)
                    st=mij+1;
                else if(v[mij]>=x)
                {
                    dr=mij-1;
                    rez=mij;
                }
            }
            if(v[dr]==x)
                rez=dr;
            fout<<rez<<'\n';
        }
    }
    return 0;
}