In the competition, you should use neural networks to learn some functions. For testing, we will exhibit some functions. There are two phases of the competition. In the first one, you could revise your code by changing learning rate, network structure, the optimizer or any others. You could submit your network for 100 times at most daily, and see the result on testing examples. Besides, your work would be tested on unknown functions and be scored by the fitting effect, which couldn't be seen until the second phases when you couldn't change your code. After all the phases finished, we will give scores for each one based on your fitting score on unknown examples.