Mid-Central USA 2009 - 题库

ID	题目显示标签隐藏标签	AC / 尝试	难度
2905	P3912 Up and Down Mid-Central USA 2009	0 / 0	(无)
2906	P3913 Gnome Sequencing Mid-Central USA 2009	0 / 0	(无)
2907	P3914 DuLL Mid-Central USA 2009	0 / 0	(无)
2908	P3915 Black Vienna Mid-Central USA 2009	0 / 0	(无)
2909	P3916 Duplicate Removal Mid-Central USA 2009	0 / 0	(无)
2910	P3917 Rock, Paper, Scissors Mid-Central USA 2009	0 / 0	(无)
2911	P3918 A to Z Numerals Mid-Central USA 2009	0 / 0	(无)
2912	P3919 Cell Towers Mid-Central USA 2009	0 / 0	(无)
2913	P3920 RIPOFF Mid-Central USA 2009	0 / 0	(无)

根据当前过滤条件随机选择一道题

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