摘要： Time Limit:2000MSMemory Limit:65536KTotal Submissions:10711Accepted:3182DescriptionFarmer John'sNcows (1 ≤N≤ 100,000) share many similarities. In fact, FJ has been able to narrow down the list of features shared by his cows to a list of onlyKdifferent features (1 ≤K≤ 30). For example, cows exhib 阅读全文

摘要： Time Limit:4000MSMemory Limit:65536KTotal Submissions:27277Accepted:7197DescriptionYou may have heard that no two snowflakes are alike. Your task is to write a program to determine whether this is really true. Your program will read information about a collection of snowflakes, and search for a pair 阅读全文