From 6600bd7f2446deb1bf22424d710068027a1c3c16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=84=B1=ED=9B=88?= <ksnughnu@gmail.com>
Date: Wed, 4 Feb 2026 01:38:00 +0900
Subject: [PATCH] =?UTF-8?q?=EC=99=9C=EC=9D=B4=EB=A0=87=EA=B2=8C=20?=
 =?UTF-8?q?=EC=98=A4=EB=9E=98=EA=B1=B8=EB=A6=AC=EC=A7=80?=
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---
 .../Oliver.swift"                             | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 "WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[3\354\260\250] \353\260\251\352\270\210\352\267\270\352\263\241/Oliver.swift"

diff --git "a/WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[3\354\260\250] \353\260\251\352\270\210\352\267\270\352\263\241/Oliver.swift" "b/WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[3\354\260\250] \353\260\251\352\270\210\352\267\270\352\263\241/Oliver.swift"
new file mode 100644
index 0000000..aff2ba4
--- /dev/null
+++ "b/WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[3\354\260\250] \353\260\251\352\270\210\352\267\270\352\263\241/Oliver.swift"	
@@ -0,0 +1,49 @@
+func solution(_ m: String, _ musicinfos: [String]) -> String {
+    
+    // 분 변환
+    func toMinute(_ time: String) -> Int {
+        let t = time.split(separator: ":").map { Int($0)! }
+        return t[0] * 60 + t[1]
+    }
+
+    // 반음처리
+    func halfStep(_ s: String) -> String {
+        return s
+        .replacingOccurrences(of: "C#", with: "c")
+        .replacingOccurrences(of: "D#", with: "d")
+        .replacingOccurrences(of: "F#", with: "f")
+        .replacingOccurrences(of: "G#", with: "g")
+        .replacingOccurrences(of: "A#", with: "a")
+        .replacingOccurrences(of: "B#", with: "C")
+        .replacingOccurrences(of: "E#", with: "F")
+    }
+
+    let goal = halfStep(m)
+    var result = "(None)"
+    var maxTime = -1
+    
+    for info in musicinfos {
+        let parts = info.split(separator: ",").map { String($0) }
+        let start = toMinute(parts[0])
+        let end = toMinute(parts[1])
+        let playTime = end - start
+        let title = parts[2]
+        let melody = Array(halfStep(parts[3]))
+
+        if melody.isEmpty { continue }
+
+        var played = ""
+        for i in 0..<playTime {
+            played.append(melody[i % melody.count])
+        }
+
+        if played.contains(goal) {
+            if playTime > maxTime {
+                maxTime = playTime
+                result = title
+            }
+        }
+    }
+
+    return result
+}