#include<stdio.h>

int main(void){
    long A, B;
    
    scanf("%ld %ld",&A, &B);
    for(long i=A;i<=B;i++){
        if(i%3==0){
            printf("%ld\n",i);
        }else if(i%10==3){
            printf("%ld\n",i);
        }else if((i/10)%10==3){
            printf("%ld\n",i);
        }
    }
}