DotandCross.py

"""
Title     : Dot and Cross
Subdomain : Numpy
Domain    : Python
Author    : Ahmedur Rahman Shovon
Created   : 15 July 2016
Problem   : https://www.hackerrank.com/challenges/np-dot-and-cross/problem
"""


import numpy

n = int(input())
ar1 = []
ar2 = []
for _ in range(n):
    tmp = list(map(int, input().split()))
    ar1.append(tmp)
np_ar1 = numpy.array(ar1)
for _ in range(n):
    tmp = list(map(int, input().split()))
    ar2.append(tmp)
np_ar2 = numpy.array(ar2)
print(numpy.dot(np_ar1, np_ar2))