diff --git a/problem1.py b/problem1.py
new file mode 100644
index 0000000..dbdc423
--- /dev/null
+++ b/problem1.py
@@ -0,0 +1,6 @@
+import pandas as pd
+
+def article_views(views: pd.DataFrame) -> pd.DataFrame:
+    df=views[views['author_id']==views['viewer_id']].drop_duplicates(subset=['author_id'])[['author_id']].rename(columns={'author_id':'id'}).sort_values(by=['id'])
+    return df
+    
\ No newline at end of file
diff --git a/problem2.py b/problem2.py
new file mode 100644
index 0000000..be1f149
--- /dev/null
+++ b/problem2.py
@@ -0,0 +1,5 @@
+import pandas as pd
+
+def invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    df=tweets[tweets['content'].str.len() >15 ][['tweet_id']]
+    return df 
\ No newline at end of file