Cod sursa(job #2200419)

Utilizator DarinelaAndronovici Darinela Darinela Data 1 mai 2018 12:38:18
Problema Cautare binara Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 1.19 kb
#include <bits/stdc++.h>
using namespace std;
 
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
 
int v[100002],a,n,k,m,x ;
int main()
{
    fin>>n;
    for(int i=1; i<=n; i++)
    {
        fin>>a;
        v[i]=a;
    }
    int y=3;
    fin>>m;
    for(int i=1; i<=m; i++)
    {
        fin>>k;
        if(k==0)
        {
            fin>>y;
            x=upper_bound(v +1,v+n+1 ,y)-v-1;
            if(v[x]==y)
                fout<<y<<'\n';
            else
                fout<<-1<<'\n';
 
        }
        else if(k==1)
        {
            fin>>y;
            for(int i=y; i>=1; i--)
            {
                x=upper_bound(v +1,v+n+1 ,i)-v-1;
                if(v[x]==i)
                {
                    fout<<x<<'\n';
                    break;
                }
            }
        }
        else if(k==2)
        {
            fin>>y;
            for(int i=y; i<=v[n]; i++)
            {
                x=lower_bound(v +1,v+n+1 ,i)-v;
                if(v[x]==i)
                {
                    fout<<x<<'\n';
                    break;
                }
 
            }
 
 
        }
 
    }
 
    return 0;
}