Input Format
The input is read by the provided locked code template. In the first line, there is a single integer  denoting the number of queries. Each of the following  lines contains a stream_name followed by integer , and it corresponds to a single test for your function.
Constraints
Output Format
The output is produced by the provided and locked code template. For each of the queries (stream_name, n), if the stream_name is even then print_from_stream(n) is called. Otherwise, if the stream_name is odd, then print_from_stream(n, OddStream()) is called.

### Problem solution in Python 3 programming language.

class EvenStream(object):
def __init__(self):
self.current = 0
def get_next(self):
to_return = self.current
self.current += 2
return to_return
class OddStream(object):
def __init__(self):
self.current = 1
def get_next(self):
to_return = self.current
self.current += 2
return to_return
def print_from_stream(n, stream=None):
if stream is None:
stream = EvenStream()
for _ in range(n):
print(stream.get_next())
queries = int(input())
for _ in range(queries):
stream_name, n = input().split()
n = int(n)
if stream_name == "even":
print_from_stream(n)
else:
print_from_stream(n, OddStream())

### Problem solution in Python 2 programming language.

class EvenStream(object):
def __init__(self):
self.current = 0
def get_next(self):
to_return = self.current
self.current += 2
return to_return
class OddStream(object):
def __init__(self):
self.current = 1
def get_next(self):
to_return = self.current
self.current += 2
return to_return
def print_from_stream(n, stream=None):
if stream is None:
stream = EvenStream()
for _ in range(n):
print stream.get_next()
queries = int(raw_input())
for _ in range(queries):
stream_name, n = raw_input().split()
n = int(n)
if stream_name == "even":
print_from_stream(n)
else:
print_from_stream(n, OddStream())