#include <iostream>
using namespace std;
int main(){
	int a,b;	cin>>a>>b;
	for(int i=a;i<=b;i++){
		if(i%3==0){
			cout<<i<<endl;
			continue;
		}
		for(int j=1;i/j!=0;j*=10){
			if((i/j)%10==3){
				cout<<i<<endl;
				goto next;
			}
		}
		next:;
	}
	return 0;
}