摘要：
PAT 1002. A+B for Polynomials This time, you are supposed to find A+B where A and B are two polynomials. Input Each input file contains one test case. 阅读全文
摘要：
Calculate a + b and output the sum in standard format that is, the digits must be separated into groups of three by commas (unless there are less than 阅读全文