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import numpy
n=int(input())
arr_a=[]
for _ in range(n):
arr_a.append(list(map(int,input().split())))
arr_b=[]
for _ in range(n):
arr_b.append(list(map(int,input().split())))
print(numpy.dot(arr_a,arr_b))
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import numpy n=int(input()) arr_a=[] for _ in range(n): arr_a.append(list(map(int,input().split()))) arr_b=[] for _ in range(n): arr_b.append(list(map(int,input().split())))
print(numpy.dot(arr_a,arr_b))