摘要： 参考了 https://blog.csdn.net/qq_33266889/article/details/53468509 暂时没搞懂，以后再研究： #include<stdio.h> #include<iostream> #include<string> using namespace std; 阅读全文

摘要： Problem Description background:A new semester comes , and the HDU also meets its 50th birthday. No matter what's your major, the only thing I want to 阅读全文