Remember that the condition is the most important part of the exercise. My dad, who always helps me to prepare for a math competition, told me this:
"It's all written in the condition"
And that is obviously the truth.

Also, another important thing about the condition is that everything written in it is important. Every single word will be helpful in solving the exercises.

All I want to say is that it is really important to read the whole condition and understand all the information they want to convey.

And now - bye!