diff --git a/.github/stale.yml b/.github/stale.yml
new file mode 100644
index 00000000..404baf07
--- /dev/null
+++ b/.github/stale.yml
@@ -0,0 +1,17 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 60
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 7
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - bug
+  - security
+# Label to use when marking an issue as stale
+staleLabel: stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false
diff --git a/.pep8speaks.yml b/.pep8speaks.yml
new file mode 100644
index 00000000..57d06299
--- /dev/null
+++ b/.pep8speaks.yml
@@ -0,0 +1,26 @@
+scanner:
+  diff_only: True  # If False, the entire file touched by the Pull Request is scanned for errors. If True, only the diff is scanned.
+  linter: pycodestyle  # Other option is flake8
+
+pycodestyle:  # Same as scanner.linter value. Other option is flake8
+  max-line-length: 100  # Default is 79 in PEP 8
+  ignore:  # Errors and warnings to ignore
+    - W504  # line break after binary operator
+    - E402  # module level import not at top of file
+    - E731  # do not assign a lambda expression, use a def
+    - C406  # Unnecessary list literal - rewrite as a dict literal.
+    - E741  # ambiguous variable name
+
+no_blank_comment: True  # If True, no comment is made on PR without any errors.
+descending_issues_order: False  # If True, PEP 8 issues in message will be displayed in descending order of line numbers in the file
+
+message:  # Customize the comment made by the bot
+  opened:  # Messages when a new PR is submitted
+    header: "Hello @{name}! Thanks for opening this PR. "
+    # The keyword {name} is converted into the author's username
+    footer: "Do see the [Hitchhiker's guide to code style](https://goo.gl/hqbW4r)"
+    # The messages can be written as they would over GitHub
+  updated:  # Messages when new commits are added to the PR
+    header: "Hello @{name}! Thanks for updating this PR. "
+    footer: ""  # Why to comment the link to the style guide everytime? :)
+  no_errors: "There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: "
diff --git a/.whitesource b/.whitesource
new file mode 100644
index 00000000..f0569521
--- /dev/null
+++ b/.whitesource
@@ -0,0 +1,8 @@
+{
+  "generalSettings": {
+    "shouldScanRepo": true
+  },
+  "checkRunSettings": {
+    "vulnerableCheckRunConclusionLevel": "failure"
+  }
+}
\ No newline at end of file
diff --git a/Codes/asdf2014/1_two_sum/two_sum.py b/Codes/asdf2014/1_two_sum/two_sum.py
new file mode 100644
index 00000000..504f1c51
--- /dev/null
+++ b/Codes/asdf2014/1_two_sum/two_sum.py
@@ -0,0 +1,21 @@
+# https://leetcode.com/problems/two-sum/
+
+
+# 从 nums 中找到两个数，满足两数之和为 target
+def two_sum(nums, target):
+    nums_len = len(nums)
+    if nums_len < 1:
+        return False
+    cache = {}
+    for i in range(nums_len):
+        n = nums[i]
+        if n in cache:
+            # 2. 当前值 n 在 Map 中找到对应的 key 则拿出对应的 value，因为此时 n + key 刚好等于 target
+            return [cache[n], i]
+        else:
+            # 1. 当前值 n 与目标值 target 的差值作为 Map 的 key，而下标作为 value
+            cache[target - n] = i
+
+
+assert two_sum([2, 7, 11, 15], 9) == [0, 1]
+assert two_sum([4, 7, 0, 3], 3) == [2, 3]
diff --git a/Codes/mggger/README.md b/Codes/mggger/README.md
new file mode 100644
index 00000000..929e4f77
--- /dev/null
+++ b/Codes/mggger/README.md
@@ -0,0 +1,2 @@
+# 关于
+leetcode刷题活动
\ No newline at end of file
diff --git a/Codes/mggger/leetcode/1_two_sum.md b/Codes/mggger/leetcode/1_two_sum.md
new file mode 100644
index 00000000..a97d8c45
--- /dev/null
+++ b/Codes/mggger/leetcode/1_two_sum.md
@@ -0,0 +1,23 @@
+# code
+
+``` python
+class Solution(object):
+    def twoSum(self, nums, target):
+        d = {}
+        for i, n in enumerate(nums):
+            m = target - n
+            if m in d:
+                return [d[m], i]
+            else:
+                d[n] = i
+```
+
+## Testcase
+```python 
+
+s = Solution()
+nums = [2,7,11,15]
+target = 9
+
+assert s.twoSum(nums, target) == [0, 1]
+```
\ No newline at end of file
diff --git a/README.md b/README.md
index f5652418..29826a1c 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,11 @@
+[<img align="right" width="30%" height="30%" src="https://picture.yuzhouwan.com/yuzhouwan_logo_with_copyright.jpg">](https://yuzhouwan.com/)
+
+[![](http://progressed.io/bar/7?scale=7&title=person&suffix=位)](https://yuzhouwan.com/posts/666/)
+[![](http://progressed.io/bar/1?scale=38&title=covered&suffix=个)](https://yuzhouwan.com/posts/666/)
+[![](http://progressed.io/bar/1?scale=1040&title=completed&suffix=题)](https://yuzhouwan.com/posts/666/)
+[![](https://img.shields.io/badge/QQ%E7%BE%A4-128708857-blue.svg)](https://shang.qq.com/wpa/qunwpa?idkey=0692372b7f92845e80bc2e3e13dd4ae0bc4c0fcf88ef5864d279b21fb1317290)
+
+
 # Leetcode 组队刷题
 
 ## 介绍
@@ -9,12 +17,12 @@
 
 ### 报名途径
 
-　只需要在《[Algorithm](https://yuzhouwan.com/posts/666/)》文末留言，即可随时上车~~
+　只需要在《[Algorithm](https://yuzhouwan.com/posts/666/)》文末留言，即可随时参与
 
 
 ### 参与方式
 
-　每位参与的小伙伴，都会获得代码仓库的 Collaborators 权限，可以自由地提交代码。在 `/Codes/${User}` 目录下，每人都将拥有一个自己的代码库
+　每位参与的小伙伴，都会获得代码仓库的 Collaborators 权限，可以自由地提交代码。在 `/Codes/${User}` 目录下，每人都将拥有一个自己的代码库。留下 Github 名称后，将很快会收到邀请函，大家可以在 [asdf2014 - algorithm - invitations](https://github.com/asdf2014/algorithm/invitations) 链接中认领
 
 
 ### 刷题频率