ID 题目 显示标签 隐藏标签 AC / 尝试 难度
1253 USACOC2111A   United Cows of Farmer John 0 / 0 (无)
1254 USACOC2111B   Routing Schemes 0 / 0 (无)
1255 USACOC2111C   Balanced Subsets 0 / 0 (无)
1256 USACOC2112B   Portals 0 / 0 (无)
1257 USACOC2112C   Permutation 0 / 0 (无)
1258 USACOC2113A   Maze Tac Toe 0 / 0 (无)
1259 USACOC2113B   Do You Know Your ABCs? 0 / 0 (无)
1260 USACOC2211A   Tickets 0 / 0 (无)
1261 USACOC2211B   Paired Up 0 / 0 (无)
1262 USACOC2211C   HILO 0 / 0 (无)
1263 USACOC2212C   Bracelet Crossings 0 / 0 (无)
1264 USACOC2213A   Closest Cow Wins 0 / 0 (无)
1265 USACOC2213B   Connecting Two Barns 0 / 0 (无)
1266 USACOC2213C   Convoluted Intervals 0 / 0 (无)
1267 USACOC2214A   Lonely Photo 0 / 0 (无)
1268 USACOC2214B   Air Cownditioning 0 / 0 (无)
1269 USACOC2214C   Walking Home 0 / 0 (无)
1270 USACOC2221B   Counting Haybales 0 / 0 (无)
1271 USACOC2221C   Multiple Choice Test 0 / 0 (无)
1272 USACOC2222A   Drought 0 / 0 (无)

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根据当前过滤条件随机选择一道题