문제 제한사항 입출력 문제풀이 import java.util.*; class Solution { class report{ int money; String ref; public report(int money,String ref){ this.money = money; this.ref = ref; } } public int[] solution(String[] enroll, String[] referral, String[] seller, int[] amount) { int[] answer = new int[enroll.length]; HashMap hm = new HashMap(); for(int i = 0 ; i < enroll.length;i++){ hm.put(enroll[i],new report(0,re..
