For $n$ dynamic arrays $A_i$ ($i = 0, 1, ..., n-1$), perform a sequence of the following operations:

* pushBack($t$, $x$): Add element $x$ at the end of $A_t$.
* dump($t$): Print all elements in $A_t$.
* clear($t$): Clear $A_t$. If $A_t$ is empty, do nothing.



$A_i$ is a 0-origin array and it is empty in the initial state.

Constraints

* $1 \leq n \leq 1,000$
* $1 \leq q \leq 500,000$
* $-1,000,000,000 \leq x \leq 1,000,000,000$
* The total number of elements printed by dump operations do not exceed 500,000

Input

The input is given in the following format.


$n$ $q$
$query_1$
$query_2$
:
$query_q$


Each query $query_i$ is given by


0 $t$ $x$


or


1 $t$


or


2 $t$


where the first digits 0, 1 and 2 represent pushBack, dump and clear operations respectively.

Output

For each dump operation, print elements of $A_t$ a line. Separete adjacency elements by a space character (do not print the space after the last element). Note that, if the array is empty, an empty line should be printed.

Example

Input

3 13
0 0 1
0 0 2
0 0 3
0 1 -1
0 2 4
0 2 5
1 0
1 1
1 2
2 1
1 0
1 1
1 2


Output

1 2 3
-1
4 5
1 2 3

4 5

Difficulty: UNKNOWN_DIFFICULTY

Starter code:

Solutions:
class Vector:

	def __init__(self, num_vector):
		self.vector = [[] for i in range(0, num_vector)]

	def pushBack(self, t, x):
		self.vector[t].append(x)
		return self

	def dump(self, t):
		print(' '.join(map(str, self.vector[t])))
		return self

	def clear(self, t):
		self.vector[t].clear()
		return self
(num_vector, num_queue) = tuple(map(int, input().split(' ')))
A = Vector(num_vector)
for i in range(0, num_queue):
	queue = tuple(map(int, input().split(' ')))
	if queue[0] == 0:
		A.pushBack(queue[1], queue[2])
	elif queue[0] == 1:
		A.dump(queue[1])
	elif queue[0] == 2:
		A.clear(queue[1])


def main():
	(n, q) = map(int, input().split())
	At = list()
	for i in range(n):
		At.append(list())
	for _ in range(q):
		param = [int(a) for a in input().split()]
		if param[0] == 0:
			At[param[1]].append(param[2])
		elif param[0] == 1:
			if len(At[param[1]]) == 0:
				print()
			else:
				print(*At[param[1]])
		elif param[0] == 2:
			if len(At[param[1]]) == 0:
				continue
			else:
				At[param[1]].clear()
main()


def solve():
	import sys
	f_i = sys.stdin
	(n, q) = map(int, f_i.readline().split())
	A = [[] for i in range(n)]
	ans = []
	for l in (line.split() for line in f_i):
		op = l[0]
		if op == '0':
			A[int(l[1])].append(l[2])
		elif op == '1':
			ans.append(' '.join(A[int(l[1])]))
		else:
			A[int(l[1])].clear()
	print('\n'.join(ans))
solve()


(N, Q) = map(int, input().split())
A = [[] for _ in range(N)]
for _ in range(Q):
	query = list(map(int, input().split()))
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(*A[query[1]])
	elif query[0] == 2:
		A[query[1]].clear()


def pushback(A, t, x):
	A[t].append(x)
	return A

def dump(A, t):
	count = len(A[t])
	if count == 0:
		print()
	else:
		print(str(A[t][0]), end='')
		if count > 1:
			for i in range(1, count):
				print(' ' + str(A[t][i]), end='')
		print()

def clear(A, t):
	A[t].clear()
	return A
(n, q) = (int(x) for x in input().split())
A = [[] for i in range(n)]
for i in range(q):
	query = list(map(int, input().split()))
	if query[0] == 0:
		A = pushback(A, query[1], query[2])
	elif query[0] == 1:
		dump(A, query[1])
	else:
		A = clear(A, query[1])


from sys import stdin
from collections import deque
(n, q) = map(int, stdin.readline().split())
queries = stdin.readlines()
A = [deque() for _ in range(n)]
for query in queries:
	query = query.split()
	if query[0] == '0':
		A[int(query[1])].append(query[2])
	elif query[0] == '1':
		print(' '.join(list(A[int(query[1])])))
	else:
		A[int(query[1])].clear()


import sys
from collections import defaultdict
dyna_list = defaultdict(list)
(n, q) = map(int, sys.stdin.readline().split())
for i in range(q):
	query = sys.stdin.readline().split()
	ope = query[0]
	list_id = query[1]
	if ope == '0':
		dyna_list[list_id].append(query[2])
	elif ope == '1':
		print(' '.join(dyna_list[list_id]))
	elif ope == '2':
		dyna_list[list_id].clear()


(n, q) = list(map(int, input().split(' ')))
stacks = [[] for i in range(n)]
for i in range(q):
	op = list(map(int, input().split(' ')))
	if op[0] == 0:
		stacks[op[1]].append(op[2])
	elif op[0] == 1:
		print(' '.join(list(map(str, stacks[op[1]]))))
	elif op[0] == 2:
		stacks[op[1]] = []


def resolve():
	from collections import deque
	(n, Q) = [int(i) for i in input().split()]
	ans = [deque() for _ in range(n)]
	for _ in range(Q):
		q = [int(i) for i in input().split()]
		if q[0] == 0:
			ans[q[1]].append(q[2])
		elif q[0] == 1:
			print(*ans[q[1]])
		else:
			ans[q[1]].clear()
resolve()


import sys
from collections import defaultdict
n = int(sys.stdin.readline().split()[0])
A = defaultdict(list)
ans = []
for query in sys.stdin:
	if query[0] == '0':
		(t, x) = query[2:].split()
		A[t].append(x)
	elif query[0] == '1':
		ans.append(' '.join(A[query[2:-1]]) + '\n')
	else:
		A[query[2:-1]] = []
sys.stdout.writelines(ans)


(q, n) = map(int, input().split(' '))
A = [[] for i in range(q)]
for i in range(n):
	a = [int(j) for j in input().split(' ')]
	if a[0] == 0:
		A[a[1]].append(a[2])
	elif a[0] == 1:
		print(' '.join(map(str, A[a[1]])))
	elif a[0] == 2:
		A[a[1]].clear()


from collections import deque
(n, q) = map(int, input().split())
Q = []
for i in range(n):
	Q.append(deque())
for i in range(q):
	(a, *b) = map(int, input().split())
	if a == 0:
		Q[b[0]].append(b[1])
	elif a == 1:
		print(*Q[b[0]])
	else:
		Q[b[0]].clear()


from typing import List
(num_vector, num_query) = map(lambda x: int(x), input().split())
int_vector: List[List[int]] = [[] for _ in range(num_vector)]
for _ in range(num_query):
	(op, *value) = map(lambda x: int(x), input().split())
	if 0 == op:
		int_vector[value[0]].append(value[1])
	elif 1 == op:
		print(' '.join([str(elem) for elem in int_vector[value[0]]]))
	elif 2 == op:
		int_vector[value[0]] = []
	else:
		pass


def get_input():
	return list(map(int, input().split(' ')))
(n, q) = get_input()
l = [[] for i in range(n)]
for _ in range(q):
	c = get_input()
	if c[0] == 0:
		l[c[1]].append(c[2])
	elif c[0] == 1:
		print(' '.join(map(str, l[c[1]])))
	elif c[0] == 2:
		l[c[1]] = []


(n, q) = map(int, input().split())
A = [[] for i in range(n)]
queries = list()
for i in range(q):
	queries.append(list(map(int, input().split())))
for query in queries:
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(' '.join(map(str, A[query[1]])))
	elif query[0] == 2:
		A[query[1]].clear()


from collections import deque
(n, q) = list(map(int, input().split()))
A = deque()
[A.append([]) for _ in range(n)]
for i in range(q):
	query = list(map(int, input().split()))
	t = query[1]
	if query[0] == 0:
		x = query[2]
		A[t].append(x)
	elif query[0] == 1:
		print(*A[t])
	elif len(A[t]) != 0:
		A[t].clear()


def pushBack(t, x):
	A[t].append(x)

def dump(t):
	if len(A[t]) > 0:
		print(A[t][0], end='')
		for i in A[t][1:]:
			print(' {}'.format(i), end='')
	print()

def clear(t):
	A[t].clear()
cmdList = [pushBack, dump, clear]
(n, q) = map(int, input().split())
A = list()
for i in range(n):
	A.append([])
for i in range(q):
	cmd = input()
	if cmd.startswith('0'):
		(c, t, x) = map(int, cmd.split(' '))
		cmdList[0](t, x)
	if cmd.startswith('1'):
		(c, t) = map(int, cmd.split(' '))
		cmdList[1](t)
	if cmd.startswith('2'):
		(c, t) = map(int, cmd.split(' '))
		cmdList[2](t)


(n, q) = list(map(int, input().split()))
a = [[] for _ in range(n)]
for i in range(q):
	c = list(map(int, input().split()))
	if c[0] == 0:
		a[c[1]].append(c[2])
	elif c[0] == 1:
		print(*a[c[1]])
	else:
		a[c[1]] = []


import sys
(n, q) = map(int, input().split())
A = [[] for _ in range(n)]
for _ in range(q):
	query = list(map(int, sys.stdin.readline().split()))
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(*A[query[1]])
	else:
		del A[query[1]][:]


from collections import deque
(n, q) = map(int, input().split())
A = [deque() for _ in range(n)]
for _ in range(q):
	query = list(map(int, input().split()))
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(*A[query[1]])
	elif query[0] == 2:
		A[query[1]] = deque()


(n, q) = map(int, input().split())
A = [[] for i in range(n)]
for j in range(q):
	query = list(map(int, input().split()))
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(' '.join(map(str, A[query[1]])))
	elif query[0] == 2:
		A[query[1]].clear()


def main():
	(n, q) = [int(x) for x in input().split(' ')]
	arys = []
	for i in range(n):
		arys.append([])
	for i in range(q):
		query = input()
		cmd = int(query[0])
		if cmd == 0:
			(_, t, x) = [int(x) for x in query.split(' ')]
			arys[t].append(x)
		elif cmd == 1:
			(_, t) = [int(x) for x in query.split(' ')]
			print(' '.join([str(x) for x in arys[t]]))
		elif cmd == 2:
			(_, t) = [int(x) for x in query.split(' ')]
			arys[t] = []
main()


from collections import deque
import sys
sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep='\n')

def main():
	(n, q) = map(int, input().split())
	aa = [[] for _ in range(n)]
	for _ in range(q):
		qq = list(map(int, input().split()))
		if qq[0] == 0:
			aa[qq[1]].append(qq[2])
		elif qq[0] == 1:
			print(*aa[qq[1]])
		else:
			aa[qq[1]] = []
main()


readline = open(0).readline
writelines = open(1, 'w').writelines
(N, Q) = map(int, readline().split())
ans = []
A = [[] for i in range(N)]

def push(t, x):
	A[t].append(str(x))

def dump(t):
	ans.append(' '.join(A[t]))
	ans.append('\n')

def clear(t):
	A[t] = []
C = [push, dump, clear].__getitem__
for i in range(Q):
	(t, *a) = map(int, readline().split())
	C(t)(*a)
writelines(ans)


from collections import deque
(n, q) = map(int, input().split())
Q = [deque() for _ in range(n)]
for _ in range(q):
	a = input().split()
	t = int(a[1])
	if a[0] == '0':
		Q[t].append(a[2])
	elif a[0] == '1':
		if Q[t]:
			print(*Q[t])
		else:
			print()
	elif Q[t]:
		Q[t].clear()
	else:
		continue


from collections import deque

def main():
	(n, m) = map(int, input().split())
	dq = [deque() for _ in range(n)]
	for _ in range(m):
		q = list(map(int, input().split()))
		if q[0] == 0:
			dq[q[1]].append(q[2])
		elif q[0] == 1:
			print(' '.join(map(str, dq[q[1]])))
		else:
			dq[q[1]].clear()
main()


(n, q) = map(int, input().split())
A = [[] for _ in range(n)]
for _ in range(q):
	(op, t, x) = (input() + ' 1').split()[:3]
	if op == '0':
		A[int(t)].append(x)
	elif op == '1':
		print(*A[int(t)])
	else:
		A[int(t)] = []


def run():
	(n, q) = [int(x) for x in input().split()]
	ls = [[] for _ in range(n)]
	for _ in range(q):
		command = input()
		if command.startswith('0'):
			(i, j) = [int(x) for x in command[2:].split()]
			ls[i].append(j)
		elif command.startswith('1'):
			i = int(command[2:])
			print(' '.join([str(x) for x in ls[i]]))
		elif command.startswith('2'):
			i = int(command[2:])
			ls[i] = []
		else:
			raise ValueError('invalid command')
run()


from sys import stdin, setrecursionlimit
setrecursionlimit(10 ** 6 + 1)
input = stdin.readline
(n, q) = map(int, input().split())
a = [[] for _ in range(n)]
for _ in range(q):
	(c, *t) = map(int, input().split())
	if c == 0:
		a[t[0]].append(t[1])
	elif c == 1:
		print(*a[t[0]])
	else:
		a[t[0]].clear()


import os
import sys

def main():
	(n, q) = map(int, input().split())
	big_list = [[] for _ in range(n)]
	for _ in range(q):
		query = list(map(int, input().split()))
		if len(query) == 3:
			big_list[query[1]].append(query[2])
		elif query[0] == 1:
			if big_list[query[1]]:
				print(big_list[query[1]][0], end='')
				for i in range(1, len(big_list[query[1]])):
					print(' {}'.format(big_list[query[1]][i]), end='')
			print()
		else:
			big_list[query[1]].clear()
main()


(n, q) = map(int, input().split())
aa = [list() for i in range(n)]
for i in range(q):
	order = list(map(int, input().split()))
	if order[0] == 0:
		t = order[1]
		x = order[2]
		aa[t].append(x)
	elif order[0] == 1:
		t = order[1]
		for j in range(len(aa[t])):
			if j == 0:
				print(aa[t][j], end='')
			else:
				print('', aa[t][j], end='')
		print()
	elif order[0] == 2:
		t = order[1]
		del aa[t][:]
	else:
		pass


import sys
from collections import deque
(n, q) = map(int, input().split())
deq = deque()
arrays = {str(i): deque() for i in range(n)}
lines = sys.stdin.readlines()
for i in range(q):
	(query, *arg) = lines[i].split()
	if query == '0':
		arrays[arg[0]].append(arg[1])
	elif query == '1':
		print(' '.join(arrays[arg[0]]))
	elif query == '2':
		arrays[arg[0]].clear()
	else:
		raise AssertionError


(n, q) = [int(i) for i in input().split(' ')]
A = [[] for i in range(n)]
for _ in range(q):
	query = [int(i) for i in input().split(' ')]
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(' '.join([str(j) for j in A[query[1]]]))
	else:
		A[query[1]] = []


def p(b):
	print(*box[b])
(n, q) = map(int, input().split())
box = [[] for i in range(n)]
for _ in range(q):
	(a, b, *c) = map(int, input().split())
	if a == 0:
		box[b] += [c[0]]
	elif a == 1:
		p(b)
	else:
		box[b] = []


from sys import stdin
from collections import deque
(n, q) = map(int, input().split())
q_list = []
for i in range(n):
	q_list.append(list())
for i in range(q):
	l = list(stdin.readline().split())
	l[1] = int(l[1])
	if l[0] == '0':
		q_list[l[1]].append(l[2])
	elif l[0] == '1':
		print(' '.join(q_list[l[1]]))
	else:
		q_list[l[1]].clear()


from collections import deque
(n, q) = map(int, input().split())
Q = []
for i in range(n):
	Q.append(deque())
for i in range(q):
	a = input().split()
	t = int(a[1])
	if a[0] == '0':
		Q[t].append(a[2])
	elif a[0] == '1':
		print(*Q[t])
	else:
		Q[t].clear()


(n, q) = map(int, input().split())
A = [[] for _ in range(n)]
for _ in range(q):
	(command, *list_num) = input().split()
	t = int(list_num[0])
	if command == '0':
		x = int(list_num[1])
		A[t].append(x)
	elif command == '1':
		print(*A[t])
	elif command == '2':
		A[t].clear()
	else:
		raise


def pushBack(t, x):
	global A
	A[t].append(str(x))

def dump(t):
	global A
	if A[t] == []:
		print()
	else:
		print(' '.join(A[t]))

def clear(t):
	global A
	A[t] = []
A = []
num = list(map(int, input().split()))
for j in range(num[0]):
	A.append([])
for i in range(num[1]):
	queryi = list(map(int, input().split()))
	if queryi[0] == 0:
		pushBack(queryi[1], queryi[2])
	elif queryi[0] == 1:
		dump(queryi[1])
	else:
		clear(queryi[1])


a = [int(i) for i in input().split()]
list = []
for i in range(a[0]):
	list.append([])
for i in range(a[1]):
	cmd = [int(i) for i in input().split()]
	if cmd[0] == 0:
		list[cmd[1]].append(cmd[2])
	elif cmd[0] == 1:
		maped = map(str, list[cmd[1]])
		output = ' '.join(maped)
		print(output)
	elif cmd[0] == 2:
		list[cmd[1]] = []


(n, q) = map(int, input().split())
l = [[] for i in range(n)]
for i in range(q):
	qry = list(map(int, input().split()))
	if qry[0] == 0:
		l[qry[1]].append(qry[2])
	elif qry[0] == 1:
		li = map(str, l[qry[1]])
		print(' '.join(map(str, li)))
	else:
		l[qry[1]].clear()


from collections import deque
(n, q) = map(int, input().split())
A = []
for i in range(n):
	A.append(deque())
for i in range(q):
	a = input().split()
	t = int(a[1])
	if a[0] == '0':
		A[t].append(a[2])
	elif a[0] == '1':
		print(*A[t])
	else:
		A[t].clear()


(n, q) = list(map(int, input().split()))
a = [[] for _ in range(n)]
for _ in range(q):
	q = list(map(int, input().split()))
	if q[0] == 0:
		a[q[1]].append(q[2])
	elif q[0] == 1:
		print(' '.join(map(str, a[q[1]])))
	elif q[0] == 2:
		a[q[1]].clear()


class arrayList:

	def __init__(self):
		self.L = []

	def pushBack(self, x):
		self.L.append(x)

	def dump(self):
		print(' '.join(map(str, self.L)))

	def clear(self):
		self.L.clear()
(n, queries) = map(int, input().split())
parentList = {}
for i in range(queries):
	(q, t, *x) = map(int, input().split())
	if parentList.get(t) == None:
		parentList[t] = arrayList()
	if q == 0:
		parentList[t].pushBack(x[0])
	elif q == 1:
		parentList[t].dump()
	elif q == 2:
		parentList[t].clear()


(n, q) = map(int, input().split())
A = [[] for i in range(n)]
while q:
	q -= 1
	op = input().split()
	if op[0] == '0':
		A[int(op[1])].append(op[2])
	elif op[0] == '1':
		print(*A[int(op[1])])
	else:
		A[int(op[1])].clear()


from collections import deque
import sys
input = sys.stdin.readline

def loop_proc():
	(n1, n2) = map(int, input().split())
	wl = []
	for i in range(n1):
		wl.append(deque())
	for i in range(n2):
		l = list(map(int, input().split()))
		if l[0] == 0:
			wl[l[1]].append(l[2])
		elif l[0] == 1:
			if len(wl[l[1]]) == 0:
				print('')
			else:
				print(' '.join(map(str, wl[l[1]])))
		elif l[0] == 2:
			wl[l[1]] = deque()
loop_proc()


from sys import stdin
(n, q) = map(int, input().split(' '))
list2 = [[] for _ in range(n)]
for i in range(q):
	cmd = stdin.readline().strip().split()
	if cmd[0] == '0':
		list2[int(cmd[1])].append(cmd[2])
	elif cmd[0] == '1':
		print(*list2[int(cmd[1])])
	else:
		list2[int(cmd[1])].clear()


from collections import deque
(n, q) = list(map(int, input().split()))
A = deque()
for i in range(n):
	A.append(deque())
for i in range(q):
	query = list(map(int, input().split()))
	if query[0] == 0:
		A[query[1]].append(query[2])
	elif query[0] == 1:
		print(*list(map(str, A[query[1]])))
	else:
		A[query[1]].clear()


(n, q) = map(int, input().split())
A = [[] for i in range(n)]
for i in range(q):
	command = input().split()
	com = int(command[0])
	if len(command) > 2:
		t = int(command[1])
		x = int(command[2])
	else:
		t = int(command[1])
	if com == 0:
		A[t].append(x)
	elif com == 1:
		print(*A[t])
	elif com == 2:
		A[t].clear()


from collections import deque
(n, q) = map(int, input().split())
Q = []
for i in range(n):
	Q.append(deque())
for i in range(q):
	a = input().split()
	t = int(a[1])
	if a[0] == '0':
		Q[t].append(a[2])
	elif a[0] == '1':
		print(*Q[t])
	else:
		Q[t].clear()


from collections import deque
(n, q) = input().split()
(n, q) = (int(n), int(q))
lists = [deque([]) for i in range(n)]
for i in range(q):
	p = input().split()
	if p[0] == '0':
		lists[int(p[1])].append(p[2])
	elif p[0] == '1':
		frag = False
		for i in lists[int(p[1])]:
			print(' ' + i if frag else i, end='')
			frag = True
		print()
	else:
		lists[int(p[1])].clear()


(n, q) = map(int, input().split())
L = [[] for _ in range(n)]
for i in range(q):
	query = input().split()
	if query[0] == '0':
		L[int(query[1])].append(query[2])
	elif query[0] == '1':
		print(*L[int(query[1])])
	else:
		L[int(query[1])] = []


import sys
input = sys.stdin.readline
(N, Q) = map(int, input().split())
A = [[] for _ in range(N)]
for _ in range(Q):
	q = list(map(int, input().split()))
	if q[0] == 0:
		A[q[1]].append(q[2])
	elif q[0] == 1:
		if A[q[1]]:
			print(' '.join(map(str, A[q[1]])))
		else:
			print()
	else:
		A[q[1]] = []


from collections import deque
(n, q) = map(int, input().split())
Q = []
for i in range(n):
	Q.append(deque())
for i in range(q):
	a = input().split()
	t = int(a[1])
	if a[0] == '0':
		Q[t].append(a[2])
	elif a[0] == '1':
		print(*Q[t])
	else:
		Q[t].clear()


from array import array
(n, q) = [int(i) for i in input().split()]
count = [0 for i in range(n)]
input_ = [0 for i in range(q)]
for i in range(q):
	input_[i] = input()
	a = [int(i) for i in input_[i].split()]
	if a[0] == 0:
		count[a[1]] += 1
A = [array('i', [0 for i in range(count[j] + 1)]) for j in range(n)]
cursor = [-1 for i in range(n)]

def pushBack(t, x):
	cursor[t] += 1
	A[t][cursor[t]] = x

def dump(t):
	print(*A[t][:cursor[t] + 1], sep=' ')

def clear(t):
	cursor[t] = -1
for input__ in input_:
	a = [int(i) for i in input__.split()]
	if a[0] == 0:
		pushBack(a[1], a[2])
	elif a[0] == 1:
		dump(a[1])
	else:
		clear(a[1])


(n, q) = map(int, input().split())
mat = [[] for _ in range(n)]
for _ in range(q):
	command = list(map(int, input().split()))
	if command[0] == 0:
		mat[command[1]].append(command[2])
	elif command[0] == 1:
		print(' '.join((str(c) for c in mat[command[1]])))
	elif command[0] == 2:
		mat[command[1]].clear()


(n, seq) = [int(x) for x in input().split()]
L = []
for i in range(n):
	L.append([])
for i in range(seq):
	(c, t, x) = [int(x) for x in (input() + ' 0').split()][:3]
	if c == 0:
		L[t].append(x)
	elif c == 1:
		print(' '.join(map(str, L[t])))
	elif c == 2:
		L[t].clear()
	else:
		pass


a = [int(i) for i in input().split()]
list = []
for i in range(a[0]):
	list.append([])
for i in range(a[1]):
	cmd = [int(i) for i in input().split()]
	if cmd[0] == 0:
		list[cmd[1]].append(cmd[2])
	elif cmd[0] == 1:
		output = ''
		for x in list[cmd[1]]:
			output += str(x) + ' '
		if output != '':
			output = output[:-1]
		print(output)
	elif cmd[0] == 2:
		list[cmd[1]] = []