Lv2_행렬의곱셈.py

def solution(arr1, arr2):
    answer = []
    for i in range(len(arr1)):
        temp = []
        for j in range(len(arr2[0])):
            sum = 0
            for k in range(len(arr1[0])):
                sum += arr1[i][k]  * arr2[k][j]
            temp.append(sum)
        answer.append(temp)
    return answer