Cod sursa(job #2681855)

Utilizator Mircea12Tomita Mircea Stefan Mircea12 Data 7 decembrie 2020 08:11:07
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.47 kb
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int v[100001];
int Pozitiex(int x, int v[], int n) {
    int st = 0, dr = n - 1, mij;
    while (st <= dr) {
        mij = (st + dr) / 2;
        if (v[mij] == x)
            return mij;
        if (v[mij] < x)
            st = mij + 1;
        else
            dr = mij - 1;
    }
    return -1;
}
int Pozminx(int x, int v[], int n) {
    int st = 0, dr = n - 1, mij, poz;
    while (st <= dr) {
        mij = (st + dr)/ 2;
        if (v[mij] <= x)
            poz = mij, st = mij + 1;
        else
            dr = mij - 1;
    }
    return poz;
}
int Pozmaxx(int x, int v[], int n) {
    int st = 0, dr = n - 1, mij, poz;
    while (st <= dr) {
        mij = (st + dr) / 2;
        if (v[mij] >= x)
            poz = mij, dr = mij - 1;
        else
            st = mij + 1;
    }
    return poz;
}
int main() {
    int n, m, x, poz;
    short C;
    fin >> n;
    for (int i = 0; i < n; ++ i)
        fin >> v[i];
    fin >> m;
    for (int i = 0; i < m; ++ i) {
        fin >> C >> x;
        if (C == 0) {
            poz = Pozitiex(x, v, n);
            while (v[poz] == x)
                ++ poz;
            fout << poz << '\n';
            continue;
        }
        if (C == 1) {
            fout << Pozminx(x, v, n) + 1 << '\n';
            continue;
        }
        fout << Pozmaxx(x, v, n) + 1 << '\n';
    }
    return 0;
}