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Babies are beautiful. I always want to smile at them in the street, perhaps because they are a rarer and more precious sight in this ageing country or because they remind me of my grandchildren. There are about 3.5 million children aged four and under, while dogs on the streets are a more plentiful 13.5 million. Is the dog boom compensating for fewer children? As time goes by, there are going to be ever more grandparents and ever fewer children to beam at foolishly.，更多细节参见51吃瓜
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My earliest prototype used ascii characters for snakes and fruit. This had a problem - since terminal characters are twice as tall as they are wide, vertical movement felt much faster than horizontal movement:
while (right 0 && nums[right - 1] <= nums[right]) {