import numpy

N = int(input())

ListA = list() ListB = list()

for i in range(N): ListA.append(list(map(int , input().split())))

for j in range(N): ListB.append(list(map(int , input().split())))

A = numpy.array(ListA) B = numpy.array(ListB)

result = numpy.dot(A , B)

print(result)