Cod sursa(job #2029436)

Utilizator FunnyStockyMihnea Andreescu FunnyStocky Data 30 septembrie 2017 09:22:42
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.96 kb
#include <fstream>
using namespace std;
ifstream cin("cautbin.in");
ofstream cout("cautbin.out");
int v[100005];
int main()
{
    int n,m,a,b;
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>v[i];
    cin>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>a>>b;
        int st=1,dr=n,med;
        while(st<dr)
        {
            if(v[st]==b)
            {
                dr=st;
                break;
            }
            if(v[st]==v[dr] or v[dr]==b)
            {
                st=dr;
                break;
            }
            med=(st+dr)/2;
            if(v[med]<b)
                st=med+1;
            else
                dr=med-1;
        }
        if(a<2)
            {
            while(v[st+1]==b)
                st++;
            cout<<st<<"\n";
            }
        if(a==2)
            {
            while(v[st-1]==b)
                st--;
            cout<<st<<"\n";
            }
    }
    return 0;
}