摘要:
Subway CodeForces - 131D A subway scheme, classic for all Berland cities is represented by a set of nstations connected by n passages, each of which c 阅读全文
摘要:
Gargari and Permutations CodeForces - 463D Gargari got bored to play with the bishops and now, after solving the problem about them, he is trying to d 阅读全文