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  1. <?php
  2.  
  3. function yoba($n, $v = 1, $p = 0) {
  4. 	if($n == 0) return $p;
  5. 	if($n == 1) return $v;
  6. 	return yoba($n - 1, $v + $p, $v);
  7. }
  8.  
  9. echo yoba(fgets(STDIN));
Success #stdin #stdout 0.01s 20568KB
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12586269025
https://ideone.com/5zYH2c
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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