PROGRAMMING:Judge whether an integer is a multiple of 3 or 7

This topic requires reading in an integer to judge whether it is not only a multiple of 3, but also a multiple of 7.
###Input format:
Enter a positive integer
###Output format:
If the input positive integer is a multiple of 3 and 7, output yes, otherwise output No
###Input sample 1:
```in
twenty-one
```
###Output sample 1:
```out
yes
```
###Input sample 1:
```in
twenty-two
```
###Output sample 1:
```out
no
```







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