From 530df69342c94f23c33f28cb18343823e21308aa Mon Sep 17 00:00:00 2001
From: huisuu <kimhuisu005791@gmail.com>
Date: Mon, 12 Aug 2024 21:00:32 +0900
Subject: [PATCH] 20.py

---
 HSKIM/11to20/20.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 HSKIM/11to20/20.py

diff --git a/HSKIM/11to20/20.py b/HSKIM/11to20/20.py
new file mode 100644
index 0000000..41f3642
--- /dev/null
+++ b/HSKIM/11to20/20.py
@@ -0,0 +1,16 @@
+def solution(participant, completion):
+    h = {}
+
+    for p in participant:
+        if p in h:
+            h[p] += 1
+        else:
+            h[p] = 1
+        
+        for c in completion:
+            h[p] -= 1
+        
+        # .keys()는 딕셔너리의 모든 키(key)를 반환
+        for key in h.keys():
+            if h[key] > 0:
+                return key
\ No newline at end of file