Count number of 1's in a bit string
Oftentimes when we’re dealing with a number, we’re interested in knowing the number of $1$’s in the binary representation of that number. It is also...
[Read More]
Fun With Cards (Part 1)
Let’s discuss a problem from 2010 IOI! See the problem at the bottom.
[Read More]
Sum of All
Let’s discuss a number theory problem from Brilliant. Problem link is given at the end.
[Read More]
UVa 624 - CD
This problem can be solved with recursive backtracking approach. The number of tracks on the CD is at most $20$. As we can either take...
[Read More]
UVa 10344 - 23 out of 5
Another recursive backtracking problem. Let’s first understand the problem statement.
[Read More]