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Old 2005-10-16, 05:03   #4
axn's Avatar
Jun 2003

132516 Posts
Default General Strategy - N people. K colors

Assign the colors numbers from 0 thru K-1.

Person(N) sums up the colors of all the people in front of him modulo K,
and announces the corresponding color. He will survive with probability 1/K.

Person(N-1) also sums up the colors in front of him modulo K
and then subtracts the color announced by person(N) (again modulo K).
He survives!!


Last fiddled with by axn on 2005-10-16 at 05:04
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