#include <iostream>
using namespace std;

int main() {
	int a;
	cin >> a;
	
	int b;
	cin >> b;
	
	if (a < b) {
		for (int i = a; i <= b; i = i + 1) {
			cout << i << " ";
		}
	} else {
		for (int i = a; i >= b; i = i - 1) {
			cout << i << " ";
		}
	}
	return 0;
}