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3289: Mato的文件管理 Time Limit: 40 Sec  Memory Limit: 128 MB Submit: 1463  Solved: 632 [Submit][Status][Discuss] Description Mato同学从各路神犇以各种方式（你们懂的）收集了许多资料，这些资料一共有n份，每份有一个大小和一个编号。为了防止他人偷拷，这些资料都是加密过的

NPY and girls Time Limit: 8000/4000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 604    Accepted Submission(s): 182 Problem Description NPY's girlfrie

E. XOR and Favorite Number time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output Bob has a favorite number k and