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  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4. 	int n,k,sum2;
  5. 	cin>>n>>k;
  6. 	for(int i=1;i<=n;i++){
  7. 		int a=i,sum=0;
  8. 		while(a){
  9. 			sum+=a%10;
  10. 			a/=10;
  11. 		}
  12. 		if(sum==k){
  13. 			sum2++;
  14. 		}
  15. 	}
  16. 	cout<<sum2;
  17. 	return 0;
  18. }
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/jWFC0Q
language:
C++ (gcc 8.3)
created:
12 hours ago
visibility:
public

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