#include <cstdio>
#include <climits>
#include <vector>
#include <algorithm>
#include <queue>
#include <stdio.h>
#include <string>
#include <memory.h>


#define REP(i,n) for(int i=0;i<(int)n;++i)
#define FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();++i)
#define ALL(c) (c).begin(), (c).end()
#define INF 99999999

using namespace std;

int main() {
    int a,b;
    scanf("%d %d",&a,&b);
    
    for(; a <= b; a++) {
        if(a%3 == 0) {
            printf("%d\n",a);
            continue;
        }
        string str = to_string(a);
        for(int i = 0; i < str.length(); i++) {
            if(str.at(i) == '3') {
                printf("%d\n",a);
                break;
            }
        }
        
    }
    
    
    
    
    
    
    
    
    

}