摘要：
灯塔(LightHouse) 灯塔(LightHouse) Description As shown in the following figure, If another lighthouse is in gray area, they can beacon each other. For exa 阅读全文
摘要：
This time, you are supposed to find A+B where A and B are two polynomials. Input Specification: Each input file contains one test case. Each case occu 阅读全文