题目题目描述JSZKC is going to spend his vacation! His vacation has N days. Each day, he can choose a T-shirt to wear. Obviously, he doesn’t want to wear a singer color T-shirt since others will consider ...
题目链接http://codeforces.com/contest/987/problem/D题目Some company is going to hold a fair in Byteland. There are n towns in Byteland and m two-way roads between towns. Of course, you can reach any town...
题目链接http://codeforces.com/contest/987/problem/C题目It is the middle of 2018 and Maria Stepanovna, who lives outside Krasnokamensk (a town in Zabaikalsky region), wants to rent three displays to highl...
题目链接http://codeforces.com/contest/987/problem/B题目Year 2118. Androids are in mass production for decades now, and they do all the work for humans. But androids have to go to school to be able to sol...