to Crocodiles
Prishlite kod zada4i na light@bti.secna.ru posle sorevnovaniya
zaranee spasibo

parni, pomogite, ya reshal zada4u putem nahozhdeniya nesvyazannih grup v grafe, i potom sravnival koli4estva E i J grup. 4to ya upustil??

to solve this task you would try to change all protocols using only one computer!!! so calculate number of steps needed to do that from each of computers, and print the best way ;)

why?we may change some computers at a time.

what's the point if you give the solution in the forums ?

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Edited by author 21.05.2008 03:15

Indeed!
Great!
How it can be seen during contest(or what easy way to understand it).

Try with test
7 6
E J E J E J E
1 2
2 3
1 4
4 5
1 6
6 7
Answer
2
1 J
1 E