#include <iostream>
#include <math.h>
using namespace std;
int main(void){
    // Your code here!
    double A;
    double B;
    scanf("%lf %lf", &A, &B);
    char x[32];

    for(double i = A; i < B; i++){
        if(fmod(i, 3) == 0){
            printf("%.0f\n", i);
        }else{
            snprintf(x, 32, "%.0f", i);
            for(int j = 0; j < sizeof(x); j++){
                if(x[j] == '3'){
                    printf("%.0f\n", i);
                    break;
                }
            }
        }
    }
}