Cod sursa(job #2619200)

Utilizator dumitru123Patularu Mihai dumitru123 Data 27 mai 2020 11:28:36
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.88 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
#define nmax 100001
int n,v[nmax],t,nr,tip;
int cautare1(int x)
{
    int st=1,dr=n,mij;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]<x) st=mij+1;
        else dr=mij-1;
    }
    return st;
}
int cautare2(int x)
{
    int st=1,dr=n,mij;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(v[mij]<=x) st=mij+1;
        else dr=mij-1;
    }
    return dr;
}
int main()
{
    f>>n;
    for(int i=1;i<=n;++i)
       f>>v[i];
    f>>t;
    for(int i=1;i<=t;++i)
    {
        f>>tip>>nr;
        if(tip==0)
        {
           if(v[cautare2(nr)]==nr) g<<cautare2(nr)<<'\n';
           else g<<"-1"<<'\n';
        }
        if(tip==1) g<<cautare2(nr)<<'\n';
        if(tip==2) g<<cautare1(nr)<<'\n';
    }
    return 0;
}