摘要：
D. Minimum number of stepstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputWe have a string of let 阅读全文
摘要：
B. The least round waytime limit per test2 secondsmemory limit per test64 megabytesinputstandard inputoutputstandard outputThere is a square matrix n 阅读全文