codertcm的博客

In computability theory, the halting problem is the problem of determining, from a description of an arbitrary computer program, whether the program will finish running (i.e., halt) or continue to run...

IO优化 fread 和 fwrite ，如果还想再优化有mmap....(然而并不会用，好像也没用。。。) 读入优化(这个非常重要！！！！！！！) inline int Read() { int x=0,f=1;char c=getchar(); while(c>'9'||c<'0') {if(c=='-') f=-1;c=getchar();} w...