Rotated Square is a great problem to tackle if you want practice implementing and manipulating 2D arrays.
Just a guy with a keyboard and some opinions
Hi, I'm David. Sometimes when I have an idea I mash my keyboard and then post the result. Here you can find keyboard mashings about my life, computers, and other stuff.
I really liked UVa 11581 Grid Successors because it is a perfect example of the good things that can happen if you don’t let the problem statement scare you.
I did not think that UVa 10258: Contest Scoreboard was a well-written problem. The problem statement did not specify the expected behavior well. I imagine this problem was the subject of many clarification requests when it was used in competition. Then again, I probably just need to practice reading problem statements carefully.