energy vs effort
effort
  140000 ++--------+--------+---------+--------+---------+--------+--------++
         +         +        +         +        +    "data/Ee.sorted"   A    +
         |                                            A                     |
  120000 ++                                                                ++
         |                                                                  |
  100000 ++                                                                ++
         |                                                                  |
         |                    A                                             |
   80000 ++      A                                                         ++
         |           A A                                                  A |
   60000 ++       AA A                                                     ++
         |     AA         A                                                 |
         |  A AAA  AA        A      A                                       |
   40000 ++AAAAA A    A              A                                     ++
         |  AAAAAAAAAAAAA                                A                  |
   20000 ++AAAAAAAA AAA   AAA A A    A    AA     A                         ++
         |AAAAAAAAAAA  AAA   A A                                            |
         AAAAAAAAAAAAAAA  AAA         +        +         +        +         +
       0 AAAAAAAA-AAAA-AA---+---------+--------+---------+--------+--------++
         0       50000    100000    150000   200000    250000   300000   350000
                                       energy