Untitled

#include <iostream>

using namespace std;
int main() {
	int a,b;
	
	cin >> a>> b;
	while (a - b > 1) {
		b++;
		if (b % 2 == 0) {


			cout<< b << " " << endl;
		}

	}
	while (b - a > 1) {
		a++;
		if (a % 2 == 0) {


			cout << a << " " << endl;
		}

	}