PROGRAMMING:Chicken and rabbit in the same cage
Case development: chicken and rabbit in the same cage
There is an interesting question about "chickens and rabbits in the same cage" recorded in the ancient Chinese "Sunzi Suanjing": "pheasants and rabbits in the same cage have 35 heads on the top and 94 feet on the bottom. How many are pheasants and rabbits?" Please input a group of possible number of heads and feet and output the number of chickens and rabbits respectively according to the above example（ The possible data are: head 35 feet 94, head 88 feet 244, head 100 feet 200, head 80 feet 240, etc.).
#####Input format:
The number of heads and the number of feet.
#####Output format:
There is a space between the number of chickens and the number of rabbits.
#####Input example:
```in
10 30
```
#####Output example:
```out
5 5
```
#####Input example:
```in
100 200
```
#####Output example:
```out
100 0
```
answer：If there is no answer, please comment
There is an interesting question about "chickens and rabbits in the same cage" recorded in the ancient Chinese "Sunzi Suanjing": "pheasants and rabbits in the same cage have 35 heads on the top and 94 feet on the bottom. How many are pheasants and rabbits?" Please input a group of possible number of heads and feet and output the number of chickens and rabbits respectively according to the above example（ The possible data are: head 35 feet 94, head 88 feet 244, head 100 feet 200, head 80 feet 240, etc.).
#####Input format:
The number of heads and the number of feet.
#####Output format:
There is a space between the number of chickens and the number of rabbits.
#####Input example:
```in
10 30
```
#####Output example:
```out
5 5
```
#####Input example:
```in
100 200
```
#####Output example:
```out
100 0
```
answer：If there is no answer, please comment