#include <bits/stdc++.h>
using namespace std;
const int MAXA = 2e9;
const int MAXB = 2e9;
const int MAXA_B = 100;

bool has3(int x){
    while( x > 0 ){
        if( x % 10 == 3 ) return true;
        x /= 10;
    }
    return false;
}

int main(){
    int a, b; scanf("%d %d", &a, &b);
    for(int i = a; i <= b; ++i){
        if( i % 3 != 0 && !has3( i ) ) continue;
        printf("%d\n", i);
    }
    return 0;
}