제출 #11710

7 4
4 2 0
4 5 1
4 7 2
5 4 -3

-1

-1
-1
-1
-1
-1
-1

4 5
2 3 0
2 4 -5
3 2 3
3 4 -3
4 3 0

-1

-1
-1
-1

5 6
2 3 0
2 4 0
3 2 -2
3 4 -2
4 5 0
5 2 0

-1

-1
-1
-1
-1