![[codeforces500E]New Year Domino](/uploads/reation/bcimg1.png)
[codeforces500E]New Year Domino
[codeforces500E]New Year Domino试题描述Celebrating the new year, many people post videos of falling dominoes; Here's a list of them:https://www.youtube.com/results?search_query=New+Years+DominosU...
