diff --git a/대괄호 규칙.py b/대괄호 규칙.py
new file mode 100644
index 0000000..bfcdc39
--- /dev/null
+++ b/대괄호 규칙.py	
@@ -0,0 +1,19 @@
+a=input("문장을 입력하십시오. : ")
+b=[]
+b=a
+t=0
+u=0
+
+while t < len(b):
+    if b[t] is "[":
+        u+=1
+    if b[t] is "]":
+        u-=1
+    if u < 0:
+        break
+    t+=1
+
+if u is 0:
+    print("올바른 문장")
+else:
+    print("잘못된 입력방식")
\ No newline at end of file