3 2
2 1 2
2 1 2
2 1 2

n = input ()
k = input ()

list = []
for i in range (0, n):
    list.append ([input ()])
    for j in range (0, list [i][0]):
        list [i].append (input ())

In [2]: n = input()
1,2,3,4,5,6

In [3]: type(n)
Out[3]: <type 'tuple'>

In [4]: print n[1] + n[3]
------> print(n[1] + n[3])
6

n, k = [int(inp) for inp in raw_input("first line:").split()]
result = [[int(inp) for inp in raw_input("line %s:" % i).split()] for i in range(n)]