One by one
148676.332ms
1557q

Rush
87695.513ms
4492q

Sieve
71897.000ms
15777q

--------------------------

Limited by 10 tasks
59831.491ms    59321.061ms   57262.727ms
1557q          1557q         1557q

Limited by 15 tasks
54754.924ms    56724.022ms   54474.207ms
1586q          1576q         1580ms

Limited by 20 tasks
53238.831ms    53021.823ms   55551.411ms
1611q          1602q         1600q

--------------------------

Limited by 50 tasks
53751.266ms    52909.621ms
4546q          4352q
