Cod sursa(job #1982540)

Utilizator HatthoHagiu Teodoraa Hattho Data 19 mai 2017 11:49:14
Problema Cautare binara Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 1.47 kb
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,m,v[10001],x,y,i,k,st,dr,mid;
int main () {
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>v[i];
    fin>>m;
    for(i=1;i<=m;i++){
        fin>>x>>y;
        if(x==0){

            st=1;
            dr=n;
            k=0;
            while(st<=dr){
                mid=(st+dr)/2;
                if(v[mid]==y)
                    k=1;
                if(v[mid]<=y)
                    st=mid+1;
                else
                    dr=mid-1;
            }
            if(k)
                fout<<dr<<"\n";
            else
                fout<<-1<<"\n";
            continue;
        }

        if(x==1){
            st=1;dr=n;
            while(st<dr){
                mid=(st+dr)/2;
                if(v[mid]<=y)
                    st=mid+1;
                else
                    dr=mid;
            }
            mid=(st+dr)/2;
            if(v[mid]>y)
                mid--;
            fout<<mid<<"\n";
            continue;
        }

        if(x==2){
            st=1;dr=n;
            while(st<dr){
                mid=(st+dr)/2;
                if(v[mid]<y)
                    st=mid+1;
                else
                    dr=mid;
            }
            mid=(st+dr)/2;
            if(v[mid]<y)
                mid++;
            fout<<mid<<"\n";
            continue;

        }

    }


return 0;

}