摘要:
In the year of 30XX30XX participants of some world programming championship live in a single large hotel. The hotel has nn floors. Each floor has mm s 阅读全文
摘要:
time limit per test 2.5 seconds memory limit per test 256 megabytes input standard input output standard output The stardate is 1983, and Princess Hei 阅读全文
摘要:
Given initially empty stacks, there are three types of operations: 1 s v: Push the value onto the top of the -th stack. 2 s: Pop the topmost value out 阅读全文