제출 #31329

2

3
1 2
1 3
2 0

3
1 2
1 3
2 3

3

7
1 3
1 2
3 0
1 3
2 1
2 0
1 0

7
1 3
1 2
3 2
1 3
2 1
2 3
1 3

4

15
1 2
1 3
2 0
1 2
3 1
3 0
1 0
1 3
2 0
2 1
0 0
2 0
1 2
1 0
2 0

15
1 2
1 3
2 3
1 2
3 1
3 2
1 2
1 3
2 3
2 1
3 1
2 3
1 2
1 3
2 3