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  1. #include <iostream>
  2. using namespace std;
  3. const int maxi=1001;
  4. int a[1001];
  5. int count(int n){
  6. 	int c=0;
  7. 	while(n>0){
  8. 		c+=n&1;
  9. 		n>>=1;
  10. 	}
  11. 	return c;
  12. }
  13. void pre(){
  14. 	for(int i=1;i<=maxi;i++){
  15. 		a[i]=a[i-1]+count(i);
  16. 	}
  17. }
  18. int main() {
  19. 	// your code goes here
  20. 	int n=1;
  21. 	cout<<a[n]<<endl;
  22. 	return 0;
  23. }
Success #stdin #stdout 0.01s 5504KB
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https://ideone.com/HvL4KP
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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