제출 #135922

8
5 8
5 10
4 5
5 6
0 9
0 9
0 9
4 11

8

7

7
15 24
0 4
14 15
9 11
15 22
0 3
9 17

4

3

8
6 11
0 7
0 2
0 2
6 16
14 21
14 16
13 14

4

3