摘要：
B. Tennis Gametime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputPetya and Gena love playing table ... 阅读全文
摘要：
C. Removing Columnstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are given ann × mrectangu... 阅读全文