[Level 1] / [Python] 행렬의 덧셈

https://school.programmers.co.kr/learn/courses/30/lessons/12950

프로그래머스

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def solution(arr1, arr2):
    answer = [[0]*len(arr1[0]) for _ in range(len(arr1))]

    sum = 0
    
    for i in range(len(arr1)):
        for j in range(len(arr1[0])):
            sum = arr1[i][j] + arr2[i][j]
            
            answer[i][j] = sum

    return answer