From d3c56c0194153c624511f082351703b230a0d287 Mon Sep 17 00:00:00 2001
From: songyc macbook <gitea@gitea>
Date: Thu, 1 Jan 2026 21:35:43 +0900
Subject: [PATCH] baekjoon 20260101

---
 code_study/Baekjoon/c/10039.c        | 13 +++++++++++
 code_study/Baekjoon/swift/2473.swift | 34 ++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 code_study/Baekjoon/c/10039.c
 create mode 100644 code_study/Baekjoon/swift/2473.swift

diff --git a/code_study/Baekjoon/c/10039.c b/code_study/Baekjoon/c/10039.c
new file mode 100644
index 0000000..ee373eb
--- /dev/null
+++ b/code_study/Baekjoon/c/10039.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int main() {
+    int ans = 0;
+    for(int i=0; i<5; i++) {
+        int n;
+        scanf("%d",&n);
+        if(n < 40) n = 40;
+        ans += n/5;
+    }
+    printf("%d\n",ans);
+    return 0;
+}
\ No newline at end of file
diff --git a/code_study/Baekjoon/swift/2473.swift b/code_study/Baekjoon/swift/2473.swift
new file mode 100644
index 0000000..c204ae1
--- /dev/null
+++ b/code_study/Baekjoon/swift/2473.swift
@@ -0,0 +1,34 @@
+func solve() {
+    guard let N = Int(readLine() ?? ""),
+          let input = readLine()
+    else { return }
+    
+    var val: [Int] = input.split(separator: " ").compactMap{Int($0)}
+    val.sort(by: <)
+    var minAbs = Int.max
+    var ans: [Int] = [0, 0, 0]
+    
+    for fix in 0..<N-1 {
+        var (L, R) = (fix + 1, N-1)
+        
+        while L < R {
+            let temp = val[fix] + val[L] + val[R]
+            
+            if abs(temp) < minAbs {
+                minAbs = abs(temp)
+                ans = [val[fix], val[L], val[R]]
+            }
+            
+            if temp > 0 {
+                R -= 1
+            }
+            else {
+                L += 1
+            }
+        }
+    }
+    
+    print(ans.compactMap({String($0)}).joined(separator: " "))
+}
+
+solve()