#include <stdio.h>
#include <math.h>
int main(void){
    int a, b;
    scanf("%d%d", &a, &b);
    while(a <= b){
        if(a % 3 == 0){
            printf("%d\n",a);
        }
        else {
            int temp;
            temp = a;
            while(temp > 0){
                if(temp % 10 == 3){
                    printf("%d\n",a);
                    goto NO;
                }
                else temp /= 10;
            }
        }
        NO:       a++;}
    return 0;
}