Cod sursa(job #1967660)

Utilizator mariastStoichitescu Maria mariast Data 16 aprilie 2017 21:41:35
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.61 kb
#include<fstream>
#include<algorithm>
using namespace std;
ifstream f ("cautbin.in");
ofstream g ("cautbin.out");
int n,p,m,t,x,a[100001],i;
int main()
{
    f>>n;
    for(i=1;i<=n;i++)
        f>>a[i];
    f>>m;
    for(i=1;i<=m;i++){
        f>>t>>x;
        if(t==0){
            p=upper_bound(a+1,a+n+1,x)-a;
            if(a[p-1]!=x) g<<-1<<'\n';
            else g<<p-1<<'\n';
        }
        else if(t==1){
            p=upper_bound(a+1,a+n+1,x)-a;
            g<<p-1<<'\n';
        }
        else{
            p=lower_bound(a+1,a+n+1,x)-a;
            g<<p<<'\n';
        }
    }
}