diff --git a/programmers/부족한 금액 계산하기/solution.java b/programmers/부족한 금액 계산하기/solution.java
new file mode 100644
index 0000000..181d8fb
--- /dev/null
+++ b/programmers/부족한 금액 계산하기/solution.java	
@@ -0,0 +1,9 @@
+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/82612
+
+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);
+    }
+}
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