Cod sursa(job #2809404)

Utilizator stefan_anastasiuAnastasiu Stefan stefan_anastasiu Data 26 noiembrie 2021 22:05:20
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.05 kb
#include <bits/stdc++.h>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int n,i,v[100005],M,m,cer,x,j,st,dr,poz;
int main()
{
    f>>n;
    for(i=1;i<=n;i++)f>>v[i];
    f>>M;
    for(j=1;j<=M;j++){f>>cer>>x;
    if(cer==0){
        st=1;
        dr=n;
        poz=-1;
        while(st<=dr){
            m=(st+dr)/2;
            if(x>=v[m]){
                if(x==v[m]) poz=m;
                st=m+1;
            }
            else dr=m-1;}
            g<<poz<<'\n';}
    else if(cer==1){
        st=1;
        dr=n;
        poz=-1;
        while(st<=dr){
            m=(st+dr)/2;
            if(v[m]<=x){
                poz=m;
                st=m+1;
            }
            else dr=m-1;}
            g<<poz<<'\n';}
    else if(cer==2){
        st=1;
        dr=n;
        poz=0;
        while(st<=dr){
            m=(st+dr)/2;
            if(x<=v[m]){
                poz=m;
                dr=m-1;
            }
            else st=m+1;}
            g<<poz<<'\n';}
            }
    return 0;
}