* $1 ≤ N, M ≤ 10^5^$
* $1 ≤ Culoarea unu nod ≤ 10^4^$

|
h3. Explicaţie

h2. Exemplu
 
table(example). |_. painting.in |_. painting.out |
| 7 5
1 2
1 3
2 4
2 5
4 6
3 7
 
2 7
4 5
3 9
5 4
2 4
|
1
|

...
== include(page="template/taskfooter" task_id="painting") ==
 

== include(page="template/taskfooter" task_id="painting") ==