Cod sursa(job #2889433)

Utilizator LelFunXDCirimpei Luca LelFunXD Data 12 aprilie 2022 19:27:19
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.18 kb
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n, m;
long long v[100001];
int a, t;
int pozX(int st, int dr, int x)
{
    int mij;
    while(st <= dr)
    {
        mij = (st + dr) / 2;
        if(v[mij] <= x)
         st = mij + 1;
        else
         dr = mij - 1;
    }
   if(v[dr] == x)
     return dr;
   else
     return -1;
}
int pozMax(int st, int dr, int x)
{
    int mij;
    while(st <= dr)
    {
        mij = (st + dr) / 2;
        if(v[mij] <= x)
         st = mij + 1;
        else
         dr = mij - 1;
    }
   return dr;
}
int pozMin(int st, int dr, int x)
{
    int mij;
    while(st <= dr)
    {
        mij = (st + dr) / 2;
        if(v[mij] < x)
         st = mij + 1;
        else
         dr = mij - 1;
    }
    return st;
}
int main()
{
    fin >> n;
    for(int i = 1; i <= n; i++)
      fin >> v[i];
    fin >> m;
    while(m)
    {
        fin >> t >> a;
        if(t == 0)
        fout << pozX(1, n, a) << '\n';
        else if(t == 1)
        fout << pozMax(1, n, a) << '\n';
        else
        fout << pozMin(1, n, a) << '\n';
        m--;
    }
}