Cod sursa(job #2290656)

Utilizator danalex032003Dan Alexandru danalex032003 Data 26 noiembrie 2018 20:02:39
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.54 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("cautbin.in");
ofstream fout("coutbin.out");

int n,st,dr,mid,i,j,k,x,m,r;

int main()
{
    fin >> n;
    int v[n+5];
    for (i=1;i<=n;i++){
        fin >> v[i];
    }
    fin >> m;
    for (i=1;i<=m;i++){
        fin >> x >> k;
        if (x==0){
            st=1;
            dr=n;
            r=n+1;
            while (st<=dr){
                mid=(st+dr)/2;
                if(v[mid]>k){
                    dr=mid-1;
                    r=mid;
                }
                else{
                    st=mid+1;
                }
            }
        }
        if (v[r-1]==k){
            fout << r-1 <<"\n";
        }
        else{
            fout << -1 <<"\n";
        }
        if (x==1){
            st=1;
            dr=n;
            r=n+1;
            while (st<=dr){
                mid=(st+dr)/2;
                if (v[mid]>k){
                    dr=mid-1;
                    r=mid;
                }
                else{
                    st=mid+1;
                }
            }
        }
        fout << r-1 <<"\n";
        if (x==2){
            st=1;
            dr=n;
            r=n+1;
            while (st<=dr){
                mid=(st+dr)/2;
                if (v[mid]>k){
                    dr=mid-1;
                    r=mid;
                }
                else{
                    st=mid+1;
                }
            }
            fout << r <<"\n";
        }
    }
    return 0;
}