#include <iostream>
#include <cmath>
#include <vector>
using namespace std;
int main() {
    
    vector<int> v;

    v.push_back(1);
    v.push_back(2);

    for(int i = 0; i < v.size(); i++) {
        cout << v[i] << " ";
    }
    
    return 0;
}