제출 #141473

8 0
0 0

Case 1:A forest of 8 trees.

Case 1: A forest of 8 trees.

5 3
2 3
1 2
3 1
1 0
0 0

Case 1:A forest of 2 trees.
Case 2:There is one tree.

Case 1: A forest of 2 trees.
Case 2: There is one tree.

8 7
6 4
2 5
7 6
5 4
1 3
3 6
8 3
0 0

Case 1:No trees

Case 1: There is one tree.