摘要：
E. Lucky Queriestime limit per test3 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputPetya loves lucky numbers very m... 阅读全文
摘要：
C. Lucky Subsequencetime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputPetya loves lucky numbers ve... 阅读全文