「Codeforces 1060G」Balls and Pockets

06-11

「Codeforces 1090H」Linearization

04-01

「Codeforces 755G」PolandBall and Many Other Balls

02-26

「Codeforces 1097G」Vladislav and a Great Legend

01-14

「Codeforces 1034E」Little C Loves 3 III

12-06

「Codeforces 1034D」Intervals of Intervals

12-06

「Codeforces #1034C」Region Separation

11-28

「Codeforces #1046B」Hyperspace Highways

11-28

「Codeforces #487E」Tourists

11-28

「Codeforces #662C」Binary Table

10-25