#include <iostream>
#include <vector>
using namespace std;
int main() {
vector<int> odd;
for (int i = 1; i <= 100; i++) {
if (i % 2 == 0) {
odd.push_back(i);
}
}
for (vector<int>::iterator it = odd.begin(); it != odd.end(); it++) {
cout << *it << endl;
}
return 0;
}