查找类似142857这样循环节,满足相乘2~(N-1)之后仍为循环结构-To find the numbers of cyclic structure as 142857 within 10^9999

通过命令提示行输入年份，并打印该年的日历，输入日期应大于0小于-Enter the year through the command prompt, and print the calendar year, enter the date should be greater than 0 and less than 9999

被转换的阿拉伯数字只限于1-9999，原因大约有两点 1.作者对罗马数字的逻辑规律未作深入探讨，欢迎赐教zngsai@163.com 2.罗马数字上面加一横扩大一千倍的约定不能与计算机的单字符世界很好兼容-Arabic numerals are converted confined 1-9999, there are two reasons 1. The author about the laws of logic is not Roman numeral for in-depth di