摘要：
Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak. Given a n × n matrix A and a positive integer k, f 阅读全文
摘要：
lightoj1146 Two men are moving concurrently, one man is moving from A to B and other man is moving from C to D. Initially the first man is at A, and t 阅读全文