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Number Zoo Patrol 问题描述 Background: You’re working in a number zoo, and it seems that one of the numbers has gone missing! Zoo workers have no idea what number is missing, and are too incompetent to fi...

Find the safest places in town 问题描述 Laura Bassi was the first female professor at a European university. Despite her immense intellect, she was not always allowed to lecture publicly. One day a profes...