P1979D  Fixing a Binary String 2024-7-23 15:46:51

P1979E  Manhattan Triangle 2024-7-23 15:46:41

P1979F  Kostyanych's Theorem 2024-7-23 15:46:28

P1980A  Problem Generator 2024-7-23 15:46:20

P1980B  Choosing Cubes 2024-7-23 15:46:13

P1980C  Sofia and the Lost Operations 2024-7-23 15:46:04

P1980D  GCD-sequence 2024-7-23 15:45:57

P1980E  Permutation of Rows and Columns 2024-7-23 15:45:50

P1980F1  Field Division (easy version) 2024-7-23 15:45:41

P1980F2  Field Division (hard version) 2024-7-23 15:45:28