subtask 1   // samples
requirements:
tests: 001 - 003
points: 0

subtask 2
requirements: 1
tests: 004 - 007
points: 12

subtask 3
requirements: 1 2
tests: 008 - 013
points: 39

subtask 4
requirements: 1 2 3
tests: 014 - 019
points: 49
