摘要：
POJ - 3258River HopscotchTime Limit:2000MSMemory Limit:65536KB64bit IO Format:%I64d & %I64u[Submit] [Go Back] [Status]DescriptionEvery year the cows hold an event featuring a peculiar version of hopscotch that involves carefully jumping from rock to rock in a river. The excitement takes place on 阅读全文
