제출 #181027

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

Case 1: There is one tree.
Case 2: A forest of 5 trees.
Case 3: There is one tree.

Case 1: There is one tree.
Case 2: A forest of 5 trees.
Case 3: No trees.

3 1
2 3
9 9
8 7
1 3
9 6
3 4
7 6
6 8
1 4
6 5
2 4
0 0

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

Case 1: A forest of 2 trees.
Case 2: No trees.