#include <iostream>
#include <fstream>
#include <string>
#include <vector>

using namespace std;

int main() {
    ifstream f;
    f.open("input.txt", ios::in);
    string s, num;
    vector<string> nums;

    while (getline(f, s)) {
        for (size_t i = 0; i < s.size(); ++i) {
            if(isdigit(s[i])) {
                num += s[i];
            } else {
                if (num != "") {
                    nums.push_back(num);
                }
                num = "";
            }
        }
        if (num != "") {
            nums.push_back(num);
        }
        num = "";
    }
    f.close();
    for (string &elem : nums) {
        cout << elem << " ";
    }
}