diff --git "a/heeheej/week31/BOJ_12919_A\354\231\200_B_2.py" "b/heeheej/week31/BOJ_12919_A\354\231\200_B_2.py"
new file mode 100644
index 0000000..0ff74ac
--- /dev/null
+++ "b/heeheej/week31/BOJ_12919_A\354\231\200_B_2.py"
@@ -0,0 +1,28 @@
+# A와 B 2
+# S에서 T를 만드는게 아니라, T에서 S를 만드는 방식으로 접근
+# 108080kb, 108ms
+
+import sys
+
+sys.stdin = open("input.txt", "r")
+input = sys.stdin.readline
+
+S = input().rstrip()
+T = input().rstrip()
+
+def task(t):
+    if S == t:
+        print(1)
+        exit()
+    elif len(t) <= len(S):
+        return
+    
+    if t[-1] == 'A':
+        task(t[:len(t)-1])
+    if t[0] == 'B':
+        t = t[::-1]
+        t = t[:len(t)-1]
+        task(t)
+
+task(T)
+print(0)
\ No newline at end of file