#include <iostream>
using namespace std;
typedef long long LL;
LL a,b;
int main(){
    cin>>a>>b;
    for(LL i=a;i<=b;i++){
        if(i%3==0){cout<<i<<endl; continue;}
        LL x=i;
        while(x){
            if(x%10==3){cout<<i<<endl; break;}
            x/=10;
        }
    }
    return 0;
}