#include <iostream>

using namespace std;

int main(){
	int a,b,c;
	cin >>a>>b;
	for(int i=a;i<=b;i++){
		if(i%3==0){
			cout << i << endl;
		}else{
			c = i;
			while(c!=0){
				if(c%10==3){
					cout<< i << endl;
					break;
				}
				c /= 10;
				
			}
		}
	}
}