diff --git a/homework/3/1.py b/homework/3/1.py
index abd358c..0c3c4eb 100644
--- a/homework/3/1.py
+++ b/homework/3/1.py
@@ -3,3 +3,5 @@ a = int(s, 2)
 print(oct(a)[2:])
 print(a)
 print(hex(a)[2:])
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/10.py b/homework/3/10.py
index b9b9a75..436005e 100644
--- a/homework/3/10.py
+++ b/homework/3/10.py
@@ -23,4 +23,6 @@ for i in range(4 - len(bin(int(a, 2) | int(b, 2))[2:])):
 print(bin(int(a, 2) | int(b, 2))[2:])
 for i in range(4 - len(bin(int(a, 2) ^ int(b, 2))[2:])):
     print("0", end="")
-print(bin(int(a, 2) ^ int(b, 2))[2:])
\ No newline at end of file
+print(bin(int(a, 2) ^ int(b, 2))[2:])
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/2.py b/homework/3/2.py
index 5f3808d..8e2adb1 100644
--- a/homework/3/2.py
+++ b/homework/3/2.py
@@ -28,4 +28,6 @@ else:
 
 print(ori)
 print(fan)
-print(bu)
\ No newline at end of file
+print(bu)
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/3.py b/homework/3/3.py
index 4f6c690..00e5d37 100644
--- a/homework/3/3.py
+++ b/homework/3/3.py
@@ -50,3 +50,5 @@ print(oct(int(a))[2:],end="")
 print(octx(a))
 print(hex(int(a))[2:],end="")
 print(hexx(a))
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/4.py b/homework/3/4.py
index 72cf261..a0ac75d 100644
--- a/homework/3/4.py
+++ b/homework/3/4.py
@@ -2,3 +2,5 @@ s= input()
 print(bin(ord(s))[2:])
 print(oct(ord(s))[2:])
 print(hex(ord(s))[2:])
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/5.py b/homework/3/5.py
index 04f0989..e3208f9 100644
--- a/homework/3/5.py
+++ b/homework/3/5.py
@@ -7,4 +7,6 @@ print(hex(int(a)+32+128)[2:],end="")
 print(hex(int(b)+32+128)[2:],end="H\n")
 
 # 20H -> 32
-# 80H -> 128
\ No newline at end of file
+# 80H -> 128
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/6.py b/homework/3/6.py
index 88f22c9..886cef6 100644
--- a/homework/3/6.py
+++ b/homework/3/6.py
@@ -6,4 +6,6 @@ elif (s == '狗'):
 elif (s == '嬷'):
     print("e6 d6\ne5 ac b7")
 
-# 我没有词典文件，先这样吧
\ No newline at end of file
+# 我没有词典文件，先这样吧
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/7.py b/homework/3/7.py
index 189ba01..9ede9c2 100644
--- a/homework/3/7.py
+++ b/homework/3/7.py
@@ -11,4 +11,6 @@ if (len(cf) > 0):
     for i in cf:
         print(i, end="")
 else:
-    print("False")
\ No newline at end of file
+    print("False")
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/8.py b/homework/3/8.py
index 0240192..ec7c6c1 100644
--- a/homework/3/8.py
+++ b/homework/3/8.py
@@ -19,3 +19,5 @@ elif (a == 7):
     print("{:.2f}".format(x**(1 / y)))
 elif (a == 8):
     print("{:.2f}".format(log(x) / log(y)))
+
+#code by Luthics
\ No newline at end of file
diff --git a/homework/3/9.py b/homework/3/9.py
index 4106a29..181bed3 100644
--- a/homework/3/9.py
+++ b/homework/3/9.py
@@ -3,3 +3,5 @@ print(bin(int(a, 2) + int(b, 2))[2:])
 for i in range(4 - len(bin(int(a, 2) & int(b, 2))[2:])):
     print("0", end="")
 print(bin(int(a, 2) & int(b, 2))[2:])
+
+#code by Luthics
\ No newline at end of file