OJ Board

I was having problems with precision around 0.

here is some IO.

input:
11

1 1
0 1 1.00
1
1 3.00

1 1
0 1 1.00
1
1 2.00

3 3
0 1 1.00
0 2 1.00
0 3 1.00
3
1 2.20
2 1.80
3 2.30

1 2
0 1 1
1 0 2
1
1 3

2 3
0 1 1.00
0 2 1.00
2 3 10.00
2
1 2.01
2 2.01

3 3
0 1 1.00
0 2 1.00
0 3 1.00
3
1 2.01
2 2.01
3 ...

31
18 5
2 1 4
1 3 2
1 1 3
2 2 0 1 4
1 3 5
1 5 0
22 5
2 1 4
1 3 2
1 1 3
2 2 0 1 4
1 3 5
1 5 0
24 5
2 1 4
1 3 2
1 1 3
2 2 0 1 4
1 3 5
1 5 0
14 3
1 1
2 7 2 2 3
1 2 0
1 3 2
7 3
1 1
2 7 2 2 3
1 2 0
1 3 2
8 3
1 1
2 7 2 2 3
1 2 0
1 3 2
20 3
1 1
2 7 2 2 3
1 2 0
1 3 2
19 3
1 1
2 7 2 2 3
1 2 0
1 3 2
5 2
1 1 ...