class Matrix(object):
    def __init__(self):
        pass

@@ -36,16 +36,19 @@
 t__(self
+, s
 ):%0A     
@@ -54,9 +54,229 @@
     
-pass
+self.rows = %5Blist(map(int, row.split()))%0A                       for row in s.split(%22%5Cn%22)%5D%0A%0A    @property%0A    def columns(self):%0A        return %5B%5Brow%5Bi%5D for row in self.rows%5D%0A                for i in range(len(self.rows%5B0%5D))%5D
 %0A

Add initial solution