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  1. #include <stdio.h>
  2. int hoge(int n){
  3. 	if(n==0){
  4. 		return 0; }
  5. 	if(n==1){
  6. 		return 1; }
  7. 	return 4*hoge(n-1)+3*hoge(n-2);
  8. }
  9. int main() {
  10. int n;
  11. 	scanf("%d",&n);
  12. 	printf("%d",hoge(n));
  13.     return 0;
  14. }
  15.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/BbxqCo
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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