 |
 |
13 of 18 |  |
 |
 |
MIT
General Trees
u
v
w
keep
discard
(
)
(
)
(
)
(
)
C
u
C
v
C
w
C
v
w
¯
¯
¯
¯
¯
=
+
-
2
,
Edges with least
common ancestor
u
MIT
General Trees
u
v
w
keep
discard
(
)
(
)
(
)
(
)
C
u
C
v
C
w
C
v
w
¯
¯
¯
¯
¯
=
+
-
2
,
Edges with least
common ancestor
u
|