Cod sursa(job #3302725)

Utilizator vladinfo_Grecu Vlad vladinfo_ Data 10 iulie 2025 13:12:33
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.5 kb
#include <bits/stdc++.h>
/// Template Dutzu

using namespace std;

ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int v[100005];
int main()
{

    int n,m;
    fin>>n;
    for (int i=1;i<=n;i++)
        fin>>v[i];
    fin>>m;
    for (int i=1;i<=m;i++)
    {
        int a,x;
        fin>>a>>x;
        if (a==0)
        {
            int st=1,dr=n,mij,rez=-1;
            while(st<=dr)
            {
                mij=st+(dr-st)/2;
                if (v[mij]<=x)
                {
                    st=mij+1;
                    if (v[mij]==x)
                    rez=mij;
                }
                else
                    dr=mij-1;
            }
            fout<<rez<<'\n';
        }
        if (a==1)
        {
            int st=1,dr=n,mij,rez;
            while(st<=dr)
            {
                mij=st+(dr-st)/2;
                if (v[mij]<=x)
                {
                    st=mij+1;
                    rez=mij;
                }
                else
                    dr=mij-1;
            }
            fout<<rez<<'\n';
        }
        if (a==2)
        {
            int st=1,dr=n,mij,rez;
            while(st<=dr)
            {
                mij=st+(dr-st)/2;
                if (v[mij]>=x)
                {
                    dr=mij-1;
                    rez=mij;
                }
                else
                    st=mij+1;
            }
            fout<<rez<<'\n';
        }
    }
    return 0;
}