subtask 1   // samples
requirements:
tests: 001 - 002
points: 0

subtask 2   // n = 2, coor < 10^9
requirements: 1
tests: 003 - 006
points: 17

subtask 3   // n = 100, coor < 10^9
requirements: 1 2
tests: 007 - 010
points: 21

subtask 4   // n = 10^5, coor < 500
requirements: 1 2
tests: 011 - 015
points: 22

subtask 5   // n = 10^5, coor < 10^9
requirements: 1 2 3 4
tests: 016 - 020
points: 40
