#include <bits/stdc++.h>
#include <iostream>
#include <string>
using namespace std;

int main() {
long long a,b,temp;
cin>>a>>b;


for (int i = a; i <= b; ++i) {
	if(i%3==0){
		cout<<i<<endl;
		continue;
	}else{
		temp=i;
		while(temp>0)
		if(temp%10==3){
			cout<<i<<endl;
			break;
		}else{
		temp=temp/10;
		}
	}
}
}


/*
2 1
3 7
4 11
5 71
6 111
7 711
8 1111
9 71111
10 11111
*/