【黑科技】读写优化 orz bdd

转自 bdd ：http://www.cnblogs.com/kevince/p/3924688.html

读入优化：

  inline int read()
  {
      char ch;
      bool flag = false;
      int a = ;
      while(!((((ch = getchar()) >= '') && (ch <= '')) || (ch == '-')));
      if(ch != '-')
      {
          a *= ;
          a += ch - '';
      }
      else
      {
          flag = true;
      }
      while(((ch = getchar()) >= '') && (ch <= ''))
      {
          a *= ;
          a += ch - '';
      }
      if(flag)
      {
          a = -a;
      }
      return a;
  }

输出优化：

 void write(int a)
 {
     if(a < )
     {
         putchar('-');
         a = -a;
     }
     if(a >= )
     {
         write(a / );
     }
     putchar(a %  + '');
     putchar('\n');
 }