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What will I learn?

This puzzle makes you split a string into substrings, replace a character of a string and convert it into floats. You also have to convert degrees into radians and use mathematical operations like square root or cosinus.

Finally you have to apply multiple computations (addition, multiplication...) on floating numbers.

Learning Opportunities

This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.


The goal of this exercise is to make you find the closest point to given geographic coordinates (latitude and longitude). Your program must print the associated location name.

In this puzzle you will play a lot with conversion (degree to radian, coordinates to distance, string to float).

A higher resolution is required to access the IDE


Want to save lives? Good! So help us find the closest defibrillator from a given position in the city of Montpellier, France.