PROGRAMMING:Count the week
Please write a program to calculate the day of the week according to the given date.
####Input format
>Mm / DD / yyyy
####Output format
>Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday
####Input sample
```in
2020 1 1
```
####Output sample
```out
Wednesday
```
Tips:
-According to the current calendar: one leap in four years, no leap in a hundred years, and another leap in four hundred years. That is: if the number of years is a multiple of 4 and not 100, or if the number of years is a multiple of 400, it is a leap year, otherwise it is an ordinary year.
-January 1, A.D. is Monday.
-Regardless of the evolution of the calendar (assuming that the current calendar has been used).
-It does not consider BC (i.e. the year is greater than or equal to 1).
answer：If there is no answer, please comment
####Input format
>Mm / DD / yyyy
####Output format
>Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday
####Input sample
```in
2020 1 1
```
####Output sample
```out
Wednesday
```
Tips:
-According to the current calendar: one leap in four years, no leap in a hundred years, and another leap in four hundred years. That is: if the number of years is a multiple of 4 and not 100, or if the number of years is a multiple of 400, it is a leap year, otherwise it is an ordinary year.
-January 1, A.D. is Monday.
-Regardless of the evolution of the calendar (assuming that the current calendar has been used).
-It does not consider BC (i.e. the year is greater than or equal to 1).
answer：If there is no answer, please comment