2A.Contest Proposal(枚举) 题意: 一个竞赛包含 n n n个问题,第 i i i个问题的难度预计最多为 b i b_i bi。现在已经有 n n n个问题提案,第 i i i个问题的难度为 a i a_i ai。最初, a 1 , a 2 , … , a n a_1,a_2,\ldots,a_n a1,a2,…,an和 b 1 , b 2 , … , b n b
FEATURES High Efficiency: Up to 98% 600KHz Frequency Operation 2A Output Current No Schottky Diode Required 4.0V to 18V Input Voltage Range 0.6V Reference Slope Compensated Curren