10
0 0 1000 1000
0 0 1001 999
999.00
0 0 1000 1000
0 0 1000 999
0.00
0 0 1 1
1 1 2 2
0.00
0 0 1 1
1 1 2 2
0.00
1 1 2 2
1 1 2 2
0.00
1 1 1 1
0 0 4 4
0.00



The problem is not to slove how much water the board can contain,but the rainwater drop perpendicularly!!!

It do matter that rain can't drop into the "angle of the two boards" when one lineseg is over the other one ,for example,
have a look at :
0 0 2 2
0 0 1 0.9
No rain drop into !!!

• All the test is pass, but also WrongAnswer (530) allen4053040allen 2010-07-26 16:25:59