Enter the year, month, and day, and then output its next day as the year, month, and day.

First of all, add the date number you want to know, add the month code, and divide it by 7, which is divisible by Sunday; If it is not divisible, the remainder is the number, and the day is the day of the week. If the sum of the date and month codes is less than 7, then the sum is the number of days, and that day is the day of the week. For example:

If you want to know what day of the week May 20, 2006 is, add "20" to the code "0" in May 2006, and the sum obtained is 20, and then divide 20 by 7, and the remainder is 6, then May 20, 2006 is week 6. Another example: if you want to know what day of the week February 3, 2006 is, then add "3" to the code "2" for February, and sum it to 5.

Since 5 is less than 7, February 3, 2006 is week 5. Due to the different month codes of each year, the following is given the calculation method of the month codes of each year: First of all, there must be a calendar, and then find a random day, for example, August 5, 2006, that day is the week 6, subtract "5" from "6", and the difference obtained is "1", then the code of August 2006 is 1, and the calculation method of the code of other months can be deduced.

This method is written as a formula: the year and month code, the day of the week of the month, and the date number of the month. Note:

When taking the date number of the month, it must be less than or equal to 7; When taking a Sunday, the value is calculated as 7, and the value of the day of the week of the month is greater than the value of the date number.

Enter a date number for the month to show the day of the week (assuming the first day of each month is a Monday).

Telling the year is used to determine if it is a leap year. , judge clearly, according to the characteristics of the number of days in the month, you can calculate the number of months and days.

The method of determining a leap year is as follows (a complex and accurate calculation method):

A normal year is a leap year that is divisible by 4 and not divisible by 100. (e.g. 2004 is a leap year, 1901 is not a leap year) A century year is a leap year divisible by 400. (e.g. 2000 is a leap year, 1900 is not a leap year).

For a year with a large number, it would be a leap year if it was divisible by 3200 and divisible by 172800. For example, 172800 is a leap year, and 86400 is not a leap year (because although it is divisible by 3200, it is not divisible by 172800) (this is a return year of 365 days 5h48'''Calculation).

The general rule followed in determining a leap year in the Gregorian calendar is: one leap in four years, no leap in one hundred years, and another leap in four hundred years.

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