Introduction - If you have any usage issues, please Google them yourself
1 Enter an integer can be positive, negative or zero, convert it to January 1, 2000 00: 00 as the base month, day, minutes and seconds, and output the week status. Input 0, output 1 January 2000 00:00:00, Saturday enter-10, the output of December 31, 1999 23:59:50, Friday input 100, the output in January 2000 1 00:01:40, Saturday