PROGRAMMING:Count the number of integers divided by 3
Enter two integers, N1 and N2 (N1 < N2 is required) to count the number of integers divided by 3 in the range of two integers.
###Input format:
Enter 2 integers on one line. Two integers are separated by a space
###Output format:
Output in the order of "a = N1, B = N2, n = number". Among them, N1, N2 and the number of output formats are the original output, without width control.
###Input example:
```in
10 15
```
###Output example:
```out
a=10,b=15,n=2
```
answer：If there is no answer, please comment
###Input format:
Enter 2 integers on one line. Two integers are separated by a space
###Output format:
Output in the order of "a = N1, B = N2, n = number". Among them, N1, N2 and the number of output formats are the original output, without width control.
###Input example:
```in
10 15
```
###Output example:
```out
a=10,b=15,n=2
```
answer：If there is no answer, please comment