제출 #170041

4
2
3 4
2 3

1 0
2 1
3 2
4 3
1
0 0
1 0
2 1
3 2
1

1
1

13
2
12 13
6 7

1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
10 9
11 10
12 11
13 12
1
0 0
0 0
0 0
0 0
0 0
0 0
1 0
2 1
3 2
4 3
5 4
6 5
7 6
1

1
1

3
8
3 1
2 3
0 0
3 3
1 1
0 3
2 0
0 2

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

1
1
1
1
1
0
1
1