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legendcn

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Accepted problems：47 problems

850 890 964 1357 1825 1839 1869 2448 2559 2570 2637 2834 3001 3047 3847 4839 5017 5437 6588 6623 7006 7520 7855 7980 8934 8944 9165 9380 9675 9738 9903 10144 10163 10552 10723 10724 10725 10726 10728 10729 10731 10732 10734 10735 10773 11116 14530

Tried problems：6 problems

798 1838 6441 8892 14732 15050

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