摘要：
A. Perfect Pairtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputLet us call a pair of integer numbersm-perfect, if at least one number in the pair is greater than or equal tom. Thus, the pairs (3, 3) and (0, 2) are 2-perfect while the pair (-1, 1) 阅读全文