405106: GYM101798 A Two Fashillows

Haneen and Reem are working on their graduation project. The deadline for submitting the final project is after d hours. They need at least w hours of work to finish it. So now they are thinking of skipping PSUT Coding Marathon V. Yaslo7oon? La yaslo7oon.

The Marathon will consume m hours of their time.

They will participate in the marathon if any of the two following cases can happen: first, if the time they have is enough for them to participate and finish the project in time, second, if they won't finish the project anyway even if they didn't participate.

Determine whether they should participate in the marathon or not.

The input contains three integers d, w and m (1 ≤ d, w, m ≤ 1000), the number of hours before the deadline, the number of working hours needed to finish the project, and the number of hours the marathon takes.

Print "good luck" if they should participate, and "see you next semester" if they should not.

All letters in the output must be in lowercase. Do not print extra characters.

48 879 7

good luck

48 41 8

see you next semester