2    4    4    8    1    0     0     0     0
    1    2 0.       2000.
    2    2 1000.    1000.
    3    2 0.       0.   
    4    2 1000.    0.
    1    9
    1    2
    2    9
    2    3
    3    9
    3    4
    4    9
    2    4
    1    4 206000.  0.3    1    500.