diff --git a/day2/条件循环.py b/day2/条件循环.py
index e216c9e..4ece615 100644
--- a/day2/条件循环.py
+++ b/day2/条件循环.py
@@ -33,5 +33,4 @@ shot = ""
 for i in range(0, length):
     num = length - i - 1
     shot += str[num]
-print(shot)
-
+print(shot)
\ No newline at end of file
diff --git a/day3/条件控制.py b/day3/条件控制.py
new file mode 100644
index 0000000..c6d8ce3
--- /dev/null
+++ b/day3/条件控制.py
@@ -0,0 +1,6 @@
+a = input("").split()
+for i in a:
+    if i.isdigit():
+        print(i*2)
+    else:
+        print(i)
\ No newline at end of file