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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long 
  4. int main() {
  5. 	ll N;
  6. 	cin>>N;
  7. 	long long k=0;
  8. 	for(int i= 1; i<=N;i++){
  9. 	if(i%9==0)
  10. 	k+=i;
  11. 	}
  12. 	cout<<k;
  13. 	return 0;
  14. }
  15.  
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/f3RFB4
language:
C++ (gcc 8.3)
created:
12 hours ago
visibility:
public

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