#include <iostream>
#include <conio.h>
#include <time.h>
#include <chrono>
#include <fstream>
#include <sstream>
#include <algorithm>
#include <string>

using namespace std;

int main() {
    setlocale(LC_CTYPE, "");
    int a;
    int num;
    std::cout << "Кiлькiсть елементiв: ";
    cin >> num;
    int* mass = new int[num];
    for (int i = 0; i < num; i++) {
        mass[i] = rand() % 47;
    }
    std::cout << endl;
    ofstream fileStrmOut("X.dan", ios::binary);

    for (int i = 0; i < num; ++i) {
        fileStrmOut.write((char*)&mass[i], sizeof(int));
    }
    fileStrmOut.close();

    int* Xi = new int[num];
    int index = 0;
    ifstream fileStrmIn("X.dan", ios::binary);

    while (fileStrmIn.read((char*)&a, sizeof(int))) {
        std::cout << a << ' ';
        Xi[index] = a;
        index++;
    }

    fileStrmIn.close();
    std::cout << endl;

    int* Z = new int[index];
    int indexZ = 0;
    int P = 0;
    cout << "\nВведiть P: ";
    cin >> P;
    for (int i = 0; i < index; ++i) {
        if (Xi[i] > P) {
            Z[i] = Xi[i];
            indexZ++;
        }
    }
    for (int i = 0; i < indexZ; ++i) {
        std::cout << Z[i] << " ";
    }
    int max = Z[0];

    for (int i = 0; i < indexZ; ++i) {
        if (Z[i] > max) {
            max = Z[i];
        }
    }
    ofstream fileStrmOut1("rez.dan", ios::binary);

    fileStrmOut1.write((char*)&max, sizeof(int));
    fileStrmOut1.close();

    ifstream fileStrmIn1("rez.dan", ios::binary);

    while (fileStrmIn1.read((char*)&a, sizeof(int))) {
        std::cout << "\nМаксимальний елемент: " << a << endl;
    }
    fileStrmIn1.close();

    return 0;
}