Cod sursa(job #1963157)

Utilizator YouDontNeedMyNameJurcut Paul YouDontNeedMyName Data 12 aprilie 2017 12:37:04
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 2.13 kb
#include<iostream>
#include <fstream>
using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
long long v[100005];
int main()
{
    int n,m,x,y,i,k,st,mij,dr;
    in >> n;
    for(i=1; i<=n; i++)
    {
        in >> v[i];
    }
    in >> m;
    for(i=1; i<=m; i++)
    {
        in >> x >> y;
        st=1;
        dr=n;
        mij=(st+dr)/2;
        if(x==0)
        {
            while(st<=dr && y!=v[mij])
            {
                if(v[mij]>y)
                {
                    st=mij+1;
                }
                else if(v[mij]<y)
                {
                    dr=mij-1;
                }
                mij=(st+dr)/2;
            }
            while(v[mij]==y)
            {
                mij++;
            }
            if(v[mij-1]!=y)
            {
                out << -1 << '\n';
            }
            else
            {
                out << mij-1 << '\n';
            }
        }
        else if(x==1)
        {
            while(st<=dr && v[mij]!=y)
            {
                if(v[mij]>y)
                {
                    st=mij+1;
                }
                else
                {
                    dr=mij-1;
                }
                mij=(st+dr)/2;
            }
            while(v[mij]<=y)
            {
                mij++;
            }
            out << mij-1 << '\n';
        }
        else if(x==2)
        {
            while(st<=dr && v[mij]!=y)
            {
                if(v[mij>y])
                {
                    st=mij+1;
                }
                else
                {
                    dr=mij-1;
                }
                mij=(st+dr)/2;
            }
            if(v[mij]>=y)
            {
                while(v[mij]>=y)
                {
                    mij--;
                }
                out << mij+1 << '\n';
            }
            else
            {
                while(v[mij]<y)
                {
                    mij++;
                }
                out << mij-1 << '\n';
            }
        }
    }
}