Turning Red
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Contribute a translation- Time limit
- 3000 ms
- Memory limit
- 2048 MB (no extra memory)
- Submissions
- 0
- Correct
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- Solved by
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Examples
Sample input 1
8 6 GBRBRRRG 2 1 4 1 2 4 4 5 6 7 3 5 6 7 1 8 1 8
Sample output 1
8
Sample input 2
4 3 RGBR 2 1 2 2 2 3 2 3 4
Sample output 2
impossible
Sample input 3
4 4 GBRG 2 1 2 2 2 3 2 3 4 1 4
Sample output 3
6
Sample input 4
3 3 RGB 1 1 1 2 1 3
Sample output 4
3
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