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Accepted problems：27 problems

249 265 499 602 801 868 1262 2021 2070 3082 4581 6298 6299 6300 6302 6304 6308 6600 6640 6667 6823 6846 8225 8228 8669 8672 13268

Tried problems：1 problem

Authored problems：1 problem

#	Problem Name
1	Counting Multisets

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