摘要：
Time Limit:5000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Description Today is army day, but the servicemen are busy with the phalanx for the celebration of the 60th anniversary of ... 阅读全文
摘要：
Time Limit:1000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Description You are given a sequence of positive integers x1, x2, ..., xn and two non-negative integers a and b. Your ... 阅读全文