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  1. #include <stdio.h>
  2.  
  3. int hoge(int n) {
  4.     if (n == 0) return 0;
  5.     if (n == 1) return 1;
  6.     return 4 * hoge(n - 1) + 3 * hoge(n - 2);
  7. }
  8.  
  9. int main() {
  10.     printf("%d", hoge(3));  
  11.     return 0;
  12. }
Success #stdin #stdout 0.01s 5288KB
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19
https://ideone.com/kkzBEp
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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