# Round 1A

- [Diversity Number](/cpw/meta-coding-competitions/2011/round-1a/diversity-number.md): https://www.facebook.com/codingcompetitions/hacker-cup/2011/round-1a/problems/A
- [Turn on the Lights](/cpw/meta-coding-competitions/2011/round-1a/turn-on-the-lights.md): https://www.facebook.com/codingcompetitions/hacker-cup/2011/round-1a/problems/B
- [Wine Tasting](/cpw/meta-coding-competitions/2011/round-1a/wine-tasting.md): https://www.facebook.com/codingcompetitions/hacker-cup/2011/round-1a/problems/C
