Cod sursa(job #1714313)

Utilizator enacheionutEnache Ionut enacheionut Data 7 iunie 2016 22:34:48
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.13 kb
#include<fstream>
using namespace std;

int v[100002],n,m;

int t1(int x){
    int f=1,l=n,m,p=-1;
    while(f<=l)
    {
        m=(f+l)/2;
        if(v[m]==x)
        {
            p=m;
            f=m+1;
        }
        else if(x<v[m]) l=m-1;
        else f=m+1;
    }
    return p;
}
int t2(int x){
    int f=1,l=n,m,p=0;
    while(f<=l)
    {
        m=(f+l)/2;
        if(x<v[m])
            l=m-1;
        else{
            p=m;
            f=m+1;
        }
    }
    return p;
}

int t3(int x){
    int f=1,l=n,m,p=-1;
    while(f<=l)
    {
        m=(f+l)/2;
        if(x>v[m])
            f=m+1;
        else{
            l=m-1;
            p=m;
        }
    }
    return p;
}

int main(){
    ifstream in("cautbin.in");
    ofstream out("cautbin.out");
    int x,y,t;
    in>>n;
    for(int i=1;i<=n;i++)
        in>>v[i];
    in>>t;
    for(int i=1;i<=t;i++){
        in>>x>>y;
        if(x==0)
            out<<t1(y)<<'\n';
        if(x==1)
            out<<t2(y)<<'\n';
        if(x==2)
            out<<t3(y)<<'\n';
    }
    in.close();
    out.close();
    return 0;
}