13 lines
453 B
Text
13 lines
453 B
Text
;; input
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(define N 41)
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(define K 3)
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(define prisoners (apply circular-list (iota N)))
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(define last-one prisoners) ; current position
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;; kill returns current position = last killed
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(define (kill lst skip)
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(cond
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((eq? (mark? lst) '🔫 )(kill (cdr lst) skip)) ;; dead ? goto next
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((zero? skip) (mark lst '🔫)) ;; all skipped ? kill
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(else (mark lst '😥 ) ;; relieved face
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(kill (cdr lst ) (1- skip))))) ;; skip 1 and goto next
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