띵유로그

import java.util.*; class Solution { public int solution(int N, int number) { int answer = 0; HashSet[] set = new HashSet[8]; int num=0; for (int i = 0 ;i < 8;i++){ num=1+10*num; set[i]=new HashSet(); set[i].add(num*N); } for(int to=1;to