摘要:
Codeforces1107E 记忆化dp E. Vasya and Binary String Description: Vasya has a string $s$ of length $n$ consisting only of digits 0 and 1. Also he has an a 阅读全文
摘要:
CodeForces 536 A. Lunar New Year and Cross Counting Description: Lunar New Year is approaching, and you bought a matrix with lots of "crosses". This m 阅读全文