打公式好麻烦 QAQ 为了节省时间去复习,原谅我引用一下别人的博客...http://blog.csdn.net/acdreamers/article/details/8542292 #include<iostream> #include<cstdio> #include<cstdlib> #include<string> #include<cstring> #define re(i,l,r) for(int i=(l);i<=(r);i+…