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d=deque([])
n=int(input())
for _ in range(n):
method,*args=input().split()
if args:
getattr(d,method)(*map(int,args))
else:
getattr(d,method)()
print(*d)
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Collections.deque()
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from collections import deque
d=deque([]) n=int(input()) for _ in range(n): method,*args=input().split() if args: getattr(d,method)(*map(int,args)) else: getattr(d,method)() print(*d)