Cod sursa(job #2332031)

Utilizator DajaMihaiDaja Mihai DajaMihai Data 30 ianuarie 2019 12:17:13
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.97 kb
#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,v[100001],i,x,m,task,p,u,ok1,poz,j,mm;
int main()
{
    fin>>n;
    for (i=1;i<=n;i++)
    {
        fin>>v[i];
    }
    fin>>mm; //taskuri
    for (i=1;i<=mm;i++)
    {
        fin>>task>>x;
        ok1=0;
        if (task==0)
        {
            p=1;
            u=n;
            while (p<=u)
            {
                m=(p+u)/2;
                if (v[m]<x)
                {
                    p=m+1;
                }
                else
                if (v[m]==x)
                {
                    ok1=1;
                    poz=m;
                    break;
                }
                else
                {
                    u=m-1;
                }
            }
            if (ok1==0)
            {
                fout<<"-1"<<'\n';
            }
            else
            {
                for (j=poz;j<=n;j++)
                {
                    if (v[j]!=x)
                    {
                        break;
                    }
                }
                j--;
                fout<<j<<'\n';
            }
        }
        else
            if (task==1)
        {
        poz=upper_bound(v+1,v+n+1,x)-v;
        if (v[poz]>x)
        {
            poz--;
        }
        if (poz>n)
        {
            poz--;
        }
            fout<<poz<<'\n';
        }
        else if(task==2)
        {
            p=1;
            u=n;
            while (p<=u)
            {
                m=(p+u)/2;
                if (v[m]<x)
                {
                    p=m+1;
                }
                else
                {
                    u=m-1;
                }
            }
            m=(p+u)/2;
            if (v[m]<x)
            {
                m++;
            }

            fout<<m<<'\n';
        }
    }
    return 0;
}