diff --git a/k5.py b/k5.py
new file mode 100644
index 0000000..ac1db37
--- /dev/null
+++ b/k5.py
@@ -0,0 +1,11 @@
+sg={'白菜':5,'西红柿':6,'葱':3,'海带':8}
+k=input('菜的名字')
+z=input('价钱')
+x=int(z)
+if k in sg:
+    if x>sg[k]:
+        print('贵了，不买')
+    else:
+        print('便宜了，买')
+else:
+    sg[k]=x
\ No newline at end of file