Hello, Codeforces! We're glad to invite you to take part in WPF Sudoku GP7.

• Authors: Giulia Franceschini, Stefano Forcolin, Valeria Losasso, Valerio Stancanelli (TheScrasse).
• The time window is USACO-style: you can choose any time window of $$$90$$$ minutes from Jul 7th to Jul 10th.
• The instruction booklet with the score distribution is available here.

Why should you join?

• If you are good at competitive programming, expect to be good at sudoku.
• There are $$$13$$$ grids of different difficulties: anyone can find something to solve.
• You will compete against tourist!

We hope you'll like the round!