#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>

#define rep(i,n) for(i=0; i<n; ++i)
#define in(a) cin >> a
#define out(a,b) cout << a << b
using namespace std;
using lint = long long;

int main(void){
    int i, j, c, n, cnt = 0;
    bool f;
    lint a, b;
    
    in(a);
    in(b);

    for(i=a; i<=b; i++){
        f = false;
        if(i%3==0)  f=true;
        else{
            n=i;
            while(n){
                if(n%10==3){
                    f=true;
                    break;
                }
            n/=10;
            }
        }
        if(f)   out(i,endl);
    }

    return 0;
}