Cod sursa(job #2460760)

Utilizator mihneaserbanmihnea serban mihneaserban Data 24 septembrie 2019 12:02:09
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.28 kb
#include <fstream>
#include <algorithm>
using namespace std;

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

const int N=100001;
int v[N];
int M,a,b,n;
int bin0(int x)
{
    int st,dr,mj,last=-1;
    st=0;
    dr=n-1;
    while ( st<=dr )
    {
        mj=(st+dr)/2;
        if(x==v[mj]){
            last=mj;
            st=mj+1;
        }
        else if(x<v[mj])
            dr=mj-1;
        else
            st=mj+1;
    }
    last++;
    return last;

}
int bin1(int x)
{
    int st,dr,mj,last=-1;
    st=0;
    dr=n-1;
    while ( st<=dr )
    {
        mj=(st+dr)/2;
        if(x>v[mj])
            dr=mj-1;
        else
            st=mj+1;
    }
    return mj;

}
int bin2(int x)
{
    int st,dr,mj,last=-1;
    st=0;
    dr=n-1;
    while ( st<=dr )
    {
        mj=(st+dr)/2;
        if(x<=v[mj])
            dr=mj-1;
        else
            st=mj+1;
    }
    mj++;
    return mj;

}
int main()
{
    int i,j;
    in>>n;
    for( i=0; i<n; i++ )
    {
        in>>v[i];
    }

    in>>M;
    for( i=0; i<M; i++ )
    {
        in>>a>>b;
        if(a==0)
            out<<bin0(b)<<'\n';
        if(a==1)
            out<<bin1(b)<<'\n';
        if(a==2)
            out<<bin2(b);
    }
    return 0;
}