PROGRAMMING:Li Wei of ly series bullies Xiaohua again

On the way to the laboratory today, ly suddenly met xiaohuahua! Seeing that xiaohuahua's expression was not very happy, he went to ask if he was unhappy in today's primary school. It was Liwei who robbed our lovely Huahua's candy again! Liwei will play a game with xiaohuahua every time. Liwei will tell a year, and xiaohuahua will judge whether it is a leap year. If xiaohuahua is wrong, he will give Liwei a candy! Then xiaohuahua tests Liwei in the same way, but Liwei has a procedure to judge whether it is a leap year! It's not fair! So please just you stick, little flower also write a procedure to judge leap year!
###Input format:
An integer
###Output format:
Is it a leap year
###Input example:
Here is a set of inputs. For example:
```in
two thousand
two thousand and one
two thousand and two
```
###Output example:
The corresponding output is given here. For example:
```out
YES
NO
NO
```







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