Cod sursa(job #1274415)

Utilizator RazecBotez Cezar Razec Data 23 noiembrie 2014 19:48:12
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.74 kb
#include<cstdio>
#include<algorithm>
using namespace std;
int n,a[100005],i,m,x,poz;
int main()
{
    freopen("cautbin.in","r",stdin);
    freopen("cautbin.out","w",stdout);
    scanf("%d",&n);
    for(i=1;i<=n;i++) scanf("%d",&a[i]);
    scanf("%d",&m);
    for(;m;m--)
    {
        scanf("%d%d",&i,&x);
        if(i==0)
        {
            poz=upper_bound(a+1,a+n+1,x)-a;
            if(a[poz-1]==x) printf("%d\n",poz-1);
            else printf("-1\n");
        }
        else if(i==1)
        {
            poz=upper_bound(a+1,a+n+1,x)-a;
            printf("%d\n",poz-1);
        }
        else
        {
            poz=lower_bound(a+1,a+n+1,x)-a;
            printf("%d\n",poz);
        }
    }
    return 0;
}