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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n,a,b,c,k=0;
  6. 	cin>>n;
  7. 	for (int i=10;i<=99;i++) {
  8. 		c=i*n; 
  9. 		a=i/10+i%10;
  10. 		b=(c/10)%10+c%10+c/100;	
  11. 		if (a==b) k++;
  12. 		}
  13. 	cout<<k; 
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 3416KB
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https://ideone.com/K1funm
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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