A52 - Queue
https://atcoder.jp/contests/tessoku-book/tasks/tessoku_book_az
提出
code: python
from collections import deque
q = int(input())
queries = list(input().split()) for _ in range(q)
que = deque()
for query in queries:
if query0 == "1":
que.append(query1)
elif query0 == "2":
print(que0)
else:
que.popleft()