The total number of chickens and rabbits was known to be n, and the total leg number was m. Input n and m to output the number of chickens and the number of rabbits in turn. If there is no solution, No answer is output.

Filename	Size	Update
1-2.cpp	203	2018-01-01
1-2.dsp	3367	2018-01-01
1-2.dsw	531	2018-01-01
1-2.ncb	33792	2018-01-01
1-2.opt	48640	2018-01-01
1-2.plg	1108	2018-01-01

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