#include <iostream>
#include <fstream>
using namespace std;


int main() {

        ifstream f("bac.txt");
        int a, maxim = -1;

        while (f >> a) {

                if (a >= maxim) {
                        cout << a << " ";
                        maxim = a;
                }
        }

        cout << endl;

        return 0;
}