input:

4
4
0 1
2 3
4 5
3 5
5
0 70
0 10
20 30
40 50
60 70
8
-1 7
-2 -1
-9 -7
-8 9
-9 -7
-2 4
-7 4
3 9
5
0 1
0 2
2 3
3 5
4 5

output:

2 3 0 2 4 
4 4 0 20 40 60 
3 3 -9 -2 3 
2 3 0 2 4 

result:

wrong answer test 1: wrong result: declared 2, actual 1