Welcome to the Mackenzie's 2019 Girls Invitational Practice Contest!

This is a practice contest for you to get familiar with the judging system.

You will have the full contest duration to try any of the problems. There will be ~30~ problems. Each problem will be worth ~100~ points, for a total of ~3000~ points. There may be subtasks for some problems, which means you have the opportunity to receive partial points for these problems. There will be no clipped output from any of the problems.

• Problem 1 is an introduction problem to learn how to print to stdout.
• Problems 2 to 10 will be approximately the difficulty of the Junior Girls Invitational contest.
• Problems 6 to 18 will be approximately the difficulty of the Senior Girls Invitational contest.
• Problems 19 and 20 are a challenge for those who finish all the other practice problems :)
• Problems 21 to 25 will be last year's Junior Girls Invitational.
• Problems 26 to 30 will be last year's Senior Girls Invitational.

Before the contest date, you may wish to check out the tips page.

After joining the contest, you proceed to the Problems tab to begin. You can also go to Users if you wish to see the rankings.

We have listed below some advice as well as contest strategies:

• Check the status codes page for common status codes.
• Remove all extra debugging code and/or input prompts from your code before submitting. The judge is very strict — most of the time, it requires your output to match exactly.
• Do not pause program execution at the end. The judging process is automated. You should use stdin / stdout to perform input / output, respectively. It is guaranteed that all the problems will be solvable with C++ and Java.
• Read carefully, and try to attempt all the problems. They may not be as hard as they seem and you may get partial points!