From 9d16f1b6b25c82c0f42a67a6b1765494f2955a3e Mon Sep 17 00:00:00 2001
From: songyc macbook <gitea@gitea>
Date: Sat, 5 Jul 2025 19:03:18 +0900
Subject: [PATCH] 20250705 baekjoon

---
 code_study/Baekjoon/python/4949.py | 23 +++++++++++++++++++++++
 code_study/Baekjoon/ts/9012.ts     | 24 ++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 code_study/Baekjoon/python/4949.py
 create mode 100644 code_study/Baekjoon/ts/9012.ts

diff --git a/code_study/Baekjoon/python/4949.py b/code_study/Baekjoon/python/4949.py
new file mode 100644
index 0000000..d927498
--- /dev/null
+++ b/code_study/Baekjoon/python/4949.py
@@ -0,0 +1,23 @@
+while True:
+    stack = []
+    line = input()
+    if line=="." :
+        break
+
+    isBalance = True
+    for c in line:
+        if c == "(":
+            stack.append(c)
+        elif c== ")":
+            if not stack or stack[-1] != "(":
+                isBalance = False
+                break
+            stack.pop()
+        elif c == "[":
+            stack.append(c)
+        elif c== "]":
+            if not stack or stack[-1] != "[":
+                isBalance = False
+                break
+            stack.pop()
+    print("yes" if isBalance and not stack else "no")
\ No newline at end of file
diff --git a/code_study/Baekjoon/ts/9012.ts b/code_study/Baekjoon/ts/9012.ts
new file mode 100644
index 0000000..796d5f7
--- /dev/null
+++ b/code_study/Baekjoon/ts/9012.ts
@@ -0,0 +1,24 @@
+export {};
+const lines = require("fs").readFileSync(0,"utf8").toString().trim().split('\n');
+
+const isEmpty = (arr:string[]) => arr.length === 0;
+const lastValue = (arr:string[]) => arr[arr.length-1];
+const n = Number(lines[0]);
+for(let i=1; i<=n; i++){
+    let stack:string[] = [];
+    let flag:boolean = true;
+    let line = lines[i];
+    for(let ch of line) {
+        if(ch === "(") {
+            stack.push(ch);
+        }
+        else if(ch === ")") {
+            if(isEmpty(stack) || lastValue(stack) !== "(") {
+                flag = false;
+                break;
+            }
+            stack.pop();
+        }
+    }
+    console.log((isEmpty(stack) && flag) ? "YES" : "NO");
+}
\ No newline at end of file