diff --git a/code_study/Baekjoon/python/11403.py b/code_study/Baekjoon/python/11403.py
new file mode 100644
index 0000000..5563e1d
--- /dev/null
+++ b/code_study/Baekjoon/python/11403.py
@@ -0,0 +1,12 @@
+N = int(input())
+linkMap = []
+for _ in range(N):
+    linkMap.append(list(map(int,input().split())))
+    
+for k in range(N):
+    for i in range(N):
+        for j in range(N):
+            linkMap[i][j] = 1 if (linkMap[i][k] != 0 and linkMap[k][j] != 0) or (linkMap[i][j] != 0) else 0
+
+for i in range(N):
+    print(*linkMap[i])
\ No newline at end of file