Cod sursa(job #2443951)

Utilizator DBogdan23Dumitru Bogdan Mihai DBogdan23 Data 29 iulie 2019 20:29:24
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.39 kb
#include <bits/stdc++.h>
using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
long long v[100001];
int caut_0(int x,int st,int dr)
{
    int mij,poz;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]==x)
        {
            poz=mij;
            st=mij+1;
        }
        else if(x<=v[mij])
            dr=mij-1;
        else
            st=mij+1;
    }
    return poz;
}
int caut_1(int x,int st,int dr)
{
    int mij,poz;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]<=x)
        {
            st=mij+1;
            poz=mij;
        }
        else
            dr=mij-1;
    }
    return poz;
}
int caut_2(int x,int st,int dr)
{
    int mij,poz;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(x<=v[mij])
        {
            dr=mij-1;
            poz=mij;
        }
        else
            st=mij+1;
    }
    return poz;
}
int main()
{
    int i,n,x,m;
    in>>n;
    for(i=1; i<=n; i++)
        in>>v[i];
    in>>m;
    for(i=1; i<=m; i++)
    {
        in>>x;
        if(x==0)
        {
            in>>x;
            out<<caut_0(x,1,n)<<'\n';
        }
        if(x==1)
        {
            in>>x;
            out<<caut_1(x,1,n)<<'\n';
        }
        if(x==2)
        {
            in>>x;
            out<<caut_2(x,1,n)<<'\n';
        }
    }
    return 0;
}