#include<bits/stdc++.h>
using namespace std;
int sum, ans, cnt, twt, k;
int main()
{
	int a, b, c;
	cin >> a >> b;
	bool hg = 0;
	if(a == 0) a++;
	for(int i = a; i <= b; i++)
	{
		int n = i;
		while(n != 0)
		{
			if(n % 10 == 0) twt++;
			n /= 10;
			sum++;
			int c = n % 10;
			
			if(c != 0)
			{
				for(int j = 1; j < sum; j++)
				{
					if(c == j)
					{
						ans++;
					}
				}
			}
		}
		if(ans = sum - 1 && twt == 1) 
		{
			cout << i << endl;
			cnt++;
		}
	}
	cout << cnt << endl;
	return 0; 
}