diff --git a/3sum/user-a.py b/3sum/user-a.py
new file mode 100644
index 0000000000..a8f1d848f3
--- /dev/null
+++ b/3sum/user-a.py
@@ -0,0 +1,2 @@
+def a():
+    return "user-a"
\ No newline at end of file
diff --git a/3sum/user-b.py b/3sum/user-b.py
new file mode 100644
index 0000000000..6fa7aee0fc
--- /dev/null
+++ b/3sum/user-b.py
@@ -0,0 +1,2 @@
+def b():
+    return "user-b-3"
\ No newline at end of file