Codeforces

Round Problem
educational-codeforces-round-180-rated-for-div-2 A. Race
B. Shrinking Array
C. Coloring Game
D. Reachability and Tree
E. Tree Colorings
codeforces-round-1059-div-3 A. Beautiful Average
B. Beautiful String
C. Beautiful XOR
D. Beautiful Permutation
E. Beautiful Palindromes
F. Beautiful Intervals
G. Beautiful Tree
codeforces-round-1057-div-2 A. Circle of Apple Trees
B. Bitwise Reversion
C. Symmetrical Polygons
D. Not Alone
codeforces-round-1056-div-2 A. El fucho
B. Abraham's Great Escape
C. The Ancient Wizards' Capes
D. Batteries
E. Mimo & Yuyu
codeforces-round-1054-div-3 A. Be Positive
B. Unconventional Pairs
C. MEX Rose
D. A and B
E. Hidden Knowledge of the Ancients
codeforces-round-1049-div-2 A. Shift Sort
B. Another Divisibility Problem
C. Ultimate Value
D. A Cruel Segment's Thesis
E. Prime Gaming
codeforces-round-1039-div-2 A. Recycling Center
B. Deque Process
D. Sum of LDS
E1. Submedians (Easy Version)
E2. Submedians (Hard Version)
codeforces-round-1037-div-3 F. 1-1-1, Free Tree!
G1. Big Wins! (easy version)
G2. Big Wins! (hard version)
codeforces-round-1035-div-2 A. Add or XOR
B. Line Segments
C. A Good Problem
D. Token Removing
E. And Constraint
codeforces-round-1034-div-3 E. MEX Count
F. Minimize Fixed Points
G. Modular Sorting