from sys import stdin
from copy import deepcopy


class Matrix(object):

    def __init__(self, x):
        self.mat = deepcopy(x)

    def __str__(self):
        sR = ""
        a = 0
        for mat in self.mat:
            if a != 0:
                sR += "\n"
            new_s = "\t".join(str(i) for i in mat)
            sR += new_s
            a += 1
        return sR

    def size(self):
        return len(self.mat), len(self.mat[0])

    def __add__(self, other):
        return Matrix(list(map(
            lambda x, y: list(map(lambda z, w: z + w, x, y)),
            self.mat, other.matrix)))

    def __mul__(self, other):
        return Matrix([[i * other for i in j] for j in self.mat])

    __rmul__ = __mul__


exec(stdin.read())