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ID 题目 显示标签 隐藏标签 AC / 尝试 难度
1972 USACOC2113A   Maze Tac Toe 0 / 0 (无)
1971 USACOC2113B   Do You Know Your ABCs? 0 / 0 (无)
1987 USACOC2213A   Closest Cow Wins 0 / 0 (无)
1988 USACOC2213B   Connecting Two Barns 0 / 0 (无)
1989 USACOC2213C   Convoluted Intervals 0 / 0 (无)
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手气不错

根据当前过滤条件随机选择一道题