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difficulty:1800-2200 contestid:354-4000&odd contesttype:div1|div2|edu|global|div3|div4 problemid:A|B|C|D|E|F|G|H|I !@saywoo !@chan120714

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Welcome! Please make sure you are in the room when you solve the problem, and then press Solve! after you solve it.

chan120714

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saywoo

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