9.3.12

#include <iostream>
#include <fstream>
using namespace std;
int main() {
    ofstream out("f.dat", ios::binary);
    double a, x;
    int n;
    cin >> x;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> a;
        out.write((char*)&a, sizeof(a));
    }
    out.close();
    ifstream in("f.dat", ios::binary);
    in.seekg(sizeof(double));
    while (in.peek() != EOF) {
        in.read((char*)&a, sizeof(double));
        if (a < x) {
            cout << a << " ";
        }
        in.seekg(sizeof(double), ios::cur);
    }
}