From 2260a3f8660fec639e6046be6f0482abfe5b8a95 Mon Sep 17 00:00:00 2001
From: lkhyun <102892446+lkhyun@users.noreply.github.com>
Date: Fri, 17 Oct 2025 16:39:21 +0900
Subject: [PATCH] =?UTF-8?q?[20251017]=20PGM=20/=20Lv2=20/=20=EC=98=81?=
 =?UTF-8?q?=EC=96=B4=20=EB=81=9D=EB=A7=90=EC=9E=87=EA=B8=B0=20/=20?=
 =?UTF-8?q?=EC=9D=B4=EA=B0=95=ED=98=84?=
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---
 ...35\353\247\220\354\236\207\352\270\260.md" | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 "lkhyun/202510/17 PGM Lv2 \354\230\201\354\226\264 \353\201\235\353\247\220\354\236\207\352\270\260.md"

diff --git "a/lkhyun/202510/17 PGM Lv2 \354\230\201\354\226\264 \353\201\235\353\247\220\354\236\207\352\270\260.md" "b/lkhyun/202510/17 PGM Lv2 \354\230\201\354\226\264 \353\201\235\353\247\220\354\236\207\352\270\260.md"
new file mode 100644
index 00000000..0cec4d9a
--- /dev/null
+++ "b/lkhyun/202510/17 PGM Lv2 \354\230\201\354\226\264 \353\201\235\353\247\220\354\236\207\352\270\260.md"	
@@ -0,0 +1,28 @@
+```java
+import java.util.*;
+class Solution {
+    public int[] solution(int n, String[] words) {
+        
+        Map<String,Boolean> history = new HashMap<>();
+        
+        int fail = 0;
+        String prev = words[0];
+        history.put(prev,true);
+        for(int i=1;i<words.length;i++){
+            if(prev.charAt(prev.length()-1) == words[i].charAt(0)
+               && history.get(words[i]) == null
+               && words.length>1){
+                prev = words[i];
+                history.put(words[i],true);
+            }else{
+                fail = i;
+                break;
+            }
+        }
+        if(fail == 0){
+            return new int[]{0,0};
+        }
+        return new int[]{(fail%n)+1,(fail/n)+1};
+    }
+}
+```