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123485PUKpuk

age=int(input('请输入年龄：'))
if age<2:
    print('您还是个婴儿')
elif 2<=age<4:
    print('您正在蹒跚学步')
elif 4<=age<13:
    print('您是儿童')
elif 13<=age<18:
    print('您是青少年')
elif 18<=age<65:
    print('您是成年人')
else:
    print('您是老年人')