#include <iostream> 
using namespace std;
int main() {
	cout << "Natural Numbers between m & n \n";
	cout << "To exit: m = n \n\n";
	while (true) {
		int m;
		int n;
		cout << "m = "; 
	    cin >> m;
	    cout << "n = "; 
	    cin >> n;
	    if (n == m) {
	    	break;
		}
	    if (n < m) {
			int temp = m;
			m = n;
			n = temp;
		}
		cout << "Natural Numbers between " << m << " & " << n << ": \n";
	    for (int i=m+1; i<n; i++) {
	    	cout << i << endl;
		}
		cout << endl;	
	}
    return 0;
}