Bitwise Operations
Problems on bitwise operations, including AND, OR and XOR of numbers and segments, checking and setting individual bits, powers of two, XOR sums of pairs and subarrays, binary representations, Gray code and Nim games.
The bitmasks article in the Basics section explains the operations. Related problem sets are under Bitmasks, Bitsets and Games.
Problems
Cycle shifts#27
Easy
Ones#622
Very easy
Change the one#1612
Very easy
Maximal XOR#1651
Very easy
Lowest Bit#1753
Easy
Duel#1851
Very easy
Happy Painting!#2054
Very hard
Probabilistic OR#2153
Medium
Disc number#2415
Very easy
Boolean Extremes#2439
Very hard
The sum of powers of two#2733
Very easy
Sequence#2798
Easy
Fate to hate#2850
Very easy
Hypercube High#2871
Very hard
SuperNim High#2877
Very hard
XOR#3084
Hard
Playing With Stones#3327
Very easy
Digit-wise modulo 3#3651
Very easy