xing_mo的博客

from osgeo import gdal

E - Delete a Segmenthttps://codeforces.com/contest/1285/problem/EThere are n segments on a Ox axis [l1,r1], [l2,r2], …, [ln,rn]. Segment [l,r] covers all points from l to r inclusive, so all x such ...

House LawnDescriptionYou have just bought a new house, and it has a huge, beautiful lawn. A lawn that needs cutting. Several times. Every week. The whole summer.After pushing the lawnmower around t...