add new uml diagrams

Author: rambasnet

demo-assignments/A1-OOP/cold/uml/RelationshipsDiagram.png

@@ -3,17 +3,17 @@ scale 2
 title "UML Class Diagram"
 class Solution {
     .. Class Variables ..
-	_instance: Solution
+	- _instance: Solution
     .. Instance Variables ..
-    _data: List[List[int]]
-    _triangles: List[Triangle]
-    _answer: List[str]
+    - _data: List[List[int]]
+    - _triangles: List[Triangle]
+    - _answer: List[str]
     .. Class Methods ..
     + get_instance(): Solution | None
     + main(): None
     + reset_instance(): None
     .. Instance Methods ..
-    + __init__(data: List[List[int]]): None
+    - __init__(data: List[List[int]]): None
 	+ read_input(): None
     + data(): List[List[int]]
     + answer(): str