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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int a,b[100000];
  6. 	scanf("%d" ,&a);
  7. 	b[1]=0;
  8. 	b[2]=1;
  9. 	b[3]=1;
  10. 	for(int i=4 ; i<=a ; i++){
  11. 		int x = b[i-1]+1;
  12. 		if(i % 2 == 0) x = min(x, b[i/2] + 1);
  13. 		if(i % 3 == 0) x = min(x, b[i /3] + 1);
  14. 		b[i] = x;
  15. 	}
  16. 	printf("%d" ,b[a]);
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 3008KB
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https://ideone.com/T3EGQW
language:
C++ 4.3.2 (gcc-4.3.2)
created:
6 years ago
visibility:
public

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