Cod sursa(job #1827009)

Utilizator Vlad_FuioreaVlad - Stefan Fuiorea Vlad_Fuiorea Data 11 decembrie 2016 12:36:31
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.58 kb
#include <fstream>

using namespace std;
ifstream cin("cautbin.in");
ofstream cout("cautbin.out");
int n,i,m,q,x,v[100001],st,dr,mid,sol;
int main()
{
    cin>>n;
    for(i=1;i<=n;i++)
        cin>>v[i];
    cin>>m;
    while(m!=0){
        m--;
        cin>>q>>x;
        if(q==0){
            st=1; dr=n; sol=-1;
            while(st<=dr){
                mid=(st+dr)/2;
                if(x==v[mid]){
                    while(v[mid]==x&&mid<=n)
                        mid++;
                sol=mid-1;
                break;
                }
                else{
                    if(x<v[mid])
                        dr=mid-1;
                    else
                        st=mid+1;
                }
            }
            cout<<sol<<'\n';
            continue;
        }
        if(q==1){
            st=1; dr=n; sol=-1;
            while(st<=dr){
                mid=(st+dr)/2;
                if(x<v[mid])
                    dr=mid-1;
                else
                    if(x>=v[mid]){
                        sol=mid;
                        st=mid+1;
                }
            }
            cout<<sol<<'\n';
            continue;
        }
        if(q==2){
            st=1; dr=n; sol=-1;
            while(st<=dr){
                mid=(st+dr)/2;
                if(x>v[mid])
                    st=mid+1;
                else
                    if(x<=v[mid]){
                        sol=mid;
                        dr=mid-1;
                }
            }
            cout<<sol<<'\n';
        }
    }
    return 0;
}