摘要：
C. Laboratory Work time limit per test : 1 second memory limit per test : 256 megabytes input : standard input output : standard output Anya and Kiril 阅读全文
摘要：
D. Peculiar apple tree time limit per test : 1 second memory limit per test : 256 megabytes input : standard input output : standard output In Arcady' 阅读全文