- URL : https://www.hackerrank.com/challenges/itertools-product/problem
- This tool computes the cartesian product of input iterables.
- It is equivalent to nested for-loops.
For example, product(A, B) returns the same as ((x,y) for x in A for y in B).

- Sample Code
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>>> from itertools import product >>> >>> print list(product([1,2,3],repeat = 2)) [(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3)] >>> >>> print list(product([1,2,3],[3,4])) [(1, 3), (1, 4), (2, 3), (2, 4), (3, 3), (3, 4)] >>> >>> A = [[1,2,3],[3,4,5]] >>> print list(product(*A)) [(1, 3), (1, 4), (1, 5), (2, 3), (2, 4), (2, 5), (3, 3), (3, 4), (3, 5)] >>> >>> B = [[1,2,3],[3,4,5],[7,8]] >>> print list(product(*B)) [(1, 3, 7), (1, 3, 8), (1, 4, 7), (1, 4, 8), (1, 5, 7), (1, 5, 8), (2, 3, 7), (2, 3, 8), (2, 4, 7), (2, 4, 8), (2, 5, 7), (2, 5, 8), (3, 3, 7), (3, 3, 8), (3, 4, 7), (3, 4, 8), (3, 5, 7), (3, 5, 8)]

- Task
- You are given a two lists A and B. Your task is to compute their cartesian product A X B.

- Example ```python A = [1, 2] B = [3, 4]

AxB = [(1, 3), (1, 4), (2, 3), (2, 4)]

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- Note: A and B are sorted lists, and the cartesian product's tuples should be output in sorted order.
- Input Format
- The first line contains the space separated elements of list A.
- The second line contains the space separated elements of list B.
- Both lists have no duplicate integer elements.
- Constraints
- 0 < A < 30
- 0 < B < 30
- Output Format
- Output the space separated tuples of the cartesian product.
#### 문제풀이
- list A와 B가 주어졌을때 A X B 의 데카르트의 곱을 구하는 것
- python의 product를 사용하였고, list형태로 받은뒤 해당 list의 원소를 for문으로 print하는 형식으로 만듬
- 아마 다른방법도 있을듯 하다..
```python
from itertools import product
A = list(map(int,(input().split())))
B = list(map(int,(input().split())))
p = list(product(A,B))
for i in p:
print(i, end=' ')

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(1, 3) (1, 4) (2, 3) (2, 4)

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