摘要：
D. Minimum number of steps time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output We have a stri 阅读全文
摘要：
B. 3-palindrome time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output In the beginning of the n 阅读全文
摘要：
A. Fake NP time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Tavak and Seyyed are good frie 阅读全文