#include <stdio.h>
#include <string>
int main(){
    //input
    long A,B;
    scanf("%ld %ld",&A,&B);

    //search and output
    for (long i = A;i <= B;i++){
        if (i%3 == 0){
            printf("%ld\n",i);
        }else{
            std::string str = std::to_string(i);
            for (int j = 0;j < str.length();j++){
                if (str[j] == '3'){
                    printf("%ld\n",i);
                    break;
                }
            }
        }
    }

    return 0;
}