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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int dp[500][2];
  5.  
  6. int main() {
  7. 	int n, k;
  8. 	cin >> n >> k;
  9. 	for(int i=0; i<k-1; ++i)
  10. 		dp[i][0] = dp[i][1] = 1;
  11. 	for(int i=0; i<n; ++i) {
  12. 		dp[i][0] = dp[i-1][0] + dp[i-1][1];
  13. 		dp[i][1] = dp[i-1][0];
  14. 		if(i-k < 0) {
  15. 			dp[i][1] += dp[i-1][1];
  16. 		} else {
  17. 			for(int j=2; j<k; ++j)
  18. 				dp[i][1] += dp[i-j][1];
  19. 		}
  20. 	}
  21. 	cout << dp[n-1][0] + dp[n-1][1] << "\n";
  22. 	return 0;
  23. }
Success #stdin #stdout 0s 4424KB
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https://ideone.com/R72zYI
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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