Cod sursa(job #3004094)

Utilizator TanasucaGeorgeAlexandruTanasucaGeorgeAlexandru TanasucaGeorgeAlexandru Data 16 martie 2023 09:45:39
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.25 kb
#include <bits/stdc++.h>
using namespace std;

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

int a[100005];
int n,q,c,x,sol;

int main()
{
    register int i;
    fin >> n;
    for(i=1;i<=n;i++)fin >> a[i];
    fin >> q;
    int st,dr,mij;
    while(q--){
        fin >> c >> x;
        st=1;dr=n;
        if(c==0){
            sol=-1;
            while(st<=dr){
                mij=(st+dr)/2;
                if(a[mij]==x){
                    sol=mij;
                    st=mij+1;
                }
                else if(a[mij]>x){
                    dr=mij-1;
                }
                else st=mij+1;
            }
        }
        else if(c==1){
            sol=0;
            while(st<=dr){
                mij=(st+dr)/2;
                if(a[mij]<=x){
                    sol=mij;
                    st=mij+1;
                }
                else dr=mij-1;
            }
        }
        else{
            sol=0;
            while(st<=dr){
                mij=(st+dr)/2;
                if(a[mij]>=x){
                    sol=mij;
                    dr=mij-1;
                }
                else st=mij+1;
            }
        }
        fout << sol << "\n";
    }
    return 0;
}