From a66bd22cea107232fb26613a077110268a5c3467 Mon Sep 17 00:00:00 2001
From: Sungwoo Cho <seouk77@gmail.com>
Date: Sat, 18 Oct 2025 10:01:12 +0900
Subject: [PATCH] 251019 1475

---
 boj/Random Defense/1475_sungwoo.kt | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 boj/Random Defense/1475_sungwoo.kt

diff --git a/boj/Random Defense/1475_sungwoo.kt b/boj/Random Defense/1475_sungwoo.kt
new file mode 100644
index 0000000..ef27d47
--- /dev/null
+++ b/boj/Random Defense/1475_sungwoo.kt	
@@ -0,0 +1,22 @@
+fun main() {
+    val roomNumber = readln()
+    val count = IntArray(10)
+
+    // 각 숫자 카운트
+    for (ch in roomNumber) {
+        val digit = ch - '0'
+        count[digit]++
+    }
+
+    // 6과 9 합쳐서 세트 계산
+    val sixNineSet = (count[6] + count[9] + 1) / 2
+
+    // 6과 9는 제외하고 나머지 숫자 중 최대값 찾기
+    var maxCount = sixNineSet
+    for (i in 0..9) {
+        if (i == 6 || i == 9) continue
+        maxCount = maxOf(maxCount, count[i])
+    }
+
+    println(maxCount)
+}
\ No newline at end of file