From 9f933e0c90ea8bf5bb8d92e2ffb1666d7ced5084 Mon Sep 17 00:00:00 2001
From: rl544 <111494264+rl544@users.noreply.github.com>
Date: Sat, 17 Dec 2022 20:05:07 +0900
Subject: [PATCH] =?UTF-8?q?updated=20at=202022.=2012.=2017.=20=EC=98=A4?=
 =?UTF-8?q?=ED=9B=84=208:05:07?=
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---
 programmers/부족한 금액 계산하기/solution.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/programmers/부족한 금액 계산하기/solution.java b/programmers/부족한 금액 계산하기/solution.java
index 181d8fb..ec7cbad 100644
--- a/programmers/부족한 금액 계산하기/solution.java	
+++ b/programmers/부족한 금액 계산하기/solution.java	
@@ -3,7 +3,11 @@
 import java.math.*;
 import java.util.*;
 class Solution {
-    public long solution(long price, int money, int count) {
-        return Math.max(price*(count*(count+1))/2-money,0);
+    public long solution(int price, int money, int count) {
+        BigDecimal line = new BigDecimal("0");
+        BigDecimal b2 = new BigDecimal("2");
+        line = new BigDecimal(count).multiply(new BigDecimal(count).add(new BigDecimal(1))).divide(b2);
+        System.out.println(line);
+        return (price*line.longValue()>money) ? (long)(price*line.longValue()-money) : 0;
     }
 }
\ No newline at end of file