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  1. <?php
  2.  
  3. error_reporting(-1);
  4. mb_internal_encoding('utf-8');
  5.  
  6. $total = 30;
  7. $skip = 5;
  8.  
  9. if ($skip > $total) {
  10.  
  11. 	echo "Задача не имеет решения. Проверьте введёные данные.";
  12. 	exit;
  13. }
  14.  
  15. for ($participant = 0; $participant < $total; $participant++) {
  16. 	$seats[$participant] = $participant + 1;
  17. }
  18.  
  19. for ($participant = 0; $total >= $skip; $total--) {
  20.  
  21.     if ($participant <= $total - $skip) {
  22.  
  23.     	$participant = $participant + $skip - 1;
  24.  
  25.         unset($seats[$participant]);
  26.         sort($seats);  
  27.  
  28.         continue;     
  29.     }
  30.  
  31. 	$placeInNewCircle = -1;
  32.     for ($PlacesToEnd = $skip; $PlacesToEnd > 0; $PlacesToEnd--) {
  33.  
  34.         $placeInNewCircle++;
  35.     	if ($participant + $PlacesToEnd - 1 == $total) {
  36.  
  37.             $participant = $placeInNewCircle;
  38.             break;
  39.     	}
  40.     }
  41.  
  42.     unset($seats[$participant]);
  43.     sort($seats);
  44. }
  45.  
  46. echo "Выигрышные места: ".implode(", ", $seats);
  47.  
Success #stdin #stdout 0.03s 52480KB
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Выигрышные места: 3, 4, 14, 27
https://ideone.com/yWwikd
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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