摘要：
https://nanti.jisuanke.com/t/38223 Xiao Ming recently indulges in match stick game and he thinks he is good at it. His friend Xiao Jun decides to test 阅读全文
摘要：
https://codeforc.es/contest/1167/problem/E E. Range Deleting time limit per test 2 seconds memory limit per test 256 megabytes input standard input ou 阅读全文