Cod sursa(job #2570118)

Utilizator TeddyDinutaDinuta Eduard Stefan TeddyDinuta Data 4 martie 2020 15:10:27
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.67 kb
#include <bits/stdc++.h>

using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
int n,a[100005],q,op,x,poz;
int main()
{
    in>>n;
    for(int i=1;i<=n;i++) in>>a[i];
    in>>q;
    while(q--)
    {
        in>>op>>x;
        if(op==0)
        {
           poz=upper_bound(a+1,a+n+1,x)-a-1;
           if(poz>=1&&poz<=n&&a[poz]==x) out<<poz<<'\n';
           else out<<-1<<'\n';
        }
        if(op==1)
        {
           poz=upper_bound(a+1,a+n+1,x)-a-1;
           out<<poz<<'\n';
        }
        if(op==2)
        {
            poz=lower_bound(a+1,a+n+1,x)-a;
            out<<poz<<'\n';
        }
    }
    return 0;
}