摘要：
E. Subsegmentstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputProgrammer Sasha ha... 阅读全文
摘要：
D. Roads not only in Berlandtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputBerl... 阅读全文