Cod sursa(job #1907772)

Utilizator mariastStoichitescu Maria mariast Data 6 martie 2017 20:52:30
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.01 kb
#include<fstream>
using namespace std;
ifstream f ("cautbin.in");
ofstream g ("cautbin.out");
int st,dr,mij,t,x,i,n,m,a[100000];
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){
            st=1;
            dr=n;
            while(st<=dr){
                mij=(st+dr)/2;
                if (x<a[mij]) dr=mij-1;
                 else st=mij+1;
            }
            if(a[dr]!=x)g<<-1<<'\n';
            else g<<dr<<'\n';
        }
        else if(t==1){
            st=1;
            dr=n;
            while(st<=dr){
                mij=(st+dr)/2;
                if (x<a[mij]) dr=mij-1;
                 else st=mij+1;
            }
            g<<dr<<'\n';
        }
        else if(t==2){
            st=1;
            dr=n;
            while(st<=dr){
                mij=(st+dr)/2;
                if (x<=a[mij]) dr=mij-1;
                 else st=mij+1;
            }
            g<<st<<'\n';
        }
    }
}