Easy way to enter and execute AtCoder test cases in Jupyter Notebook

Introduction

Do you guys do Atcoder? ?? I also look interesting! I thought that I started with Python. However, when it comes to writing code in a contest

The code test on the contest site is troublesome to move pages ... PyCharm is a little heavy to say ...

I felt like I couldn't find the right coding environment. .. And after trying various things, Jupyter Notebook seems to be just right! I've realized that, so I'd like to share it!

Introducing immediately

First of all, Jupyter Notebook is good! Perfect! If so, this article should end here

There is only one thing that is not very suitable for AtCoder.

That is, "there is no way to enter test cases well"! I want to receive input with input (), but I can't receive it because it is not prepared. ..

Therefore! Introducing "Easy way to receive AtCoder test cases in Jupyter Notebook".

Now open your notebook. Paste the code below into the first cell.

from ipywidgets import Textarea

def get_input(change):
    global Input
    Input = change["new"]

textarea = Textarea()
textarea.observe(get_input, names='value')
display(textarea)

And execute the cell ... Then a text area will appear! You can enter multiple lines in this text area, and you can paste the test case as it is!

continue, Create a cell below and paste the code below.

IN = iter(Input.split('\n')).__next__
def input():
    return IN()

That's all for preparation!

Try using

Try it in "A-Welcome to At Coder" of Atcoder's resident contest "practice".

Problem statement

Takahashi wants to process the data. Given the integers a, b, c and the string s. Display the calculation result of a + b + c and the character string s side by side.

input

The input is given in the following format.

a
b c
s

output

Output a + b + c and s on one line separated by spaces.

Input example 1

1
2 3
test

Output example 1

6 test

By the way, it is a type that has multiple lines of input. Let's paste the input example into the text area prepared earlier! It has been cut off, but it has been pasted.

Then code. Write the code in the second cell. When I ran it ... it worked! It gets line by line from the text area with input ().

All you have to do is submit the code and you'll be happy to finish! Let's pray for AC (be careful not to accidentally include the preparation code)

in conclusion

How was that? ??

You can try various inputs quickly with a little preparation, so I think it will be quite comfortable! If you are worried that you haven't found a coding environment that suits you yet, please try it ~

See you soon