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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.  
  7.     int x[n + 1];       
  8.     x[0] = 0;
  9.     x[1] = 1;
  10.  
  11.     for (int i = 2; i <= n; i++) {
  12.         x[i] = 4 * x[i - 1] + 3 * x[i - 2];
  13.     }
  14.  
  15.     return x[n];
  16. }
  17.  
  18. int main() {
  19.     printf("%d", hoge(3));
  20.     return 0;
  21. }
Success #stdin #stdout 0.01s 5312KB
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19
https://ideone.com/ZsjR2U
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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