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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	long long N, P;
  7. 	cin >> N >> P;
  8. 	double h, l, d, lenta, price;
  9. 	h = (1+N)*N*0.5;
  10. 	l = 0.5 + N*0.5;
  11. 	d = sqrt(h*h + l*l);
  12. 	lenta = ceil(d + d + 1);
  13. 	price = lenta * P;
  14. 	if (price >= 1000) {
  15. 		price *= 85;
  16. 	}
  17. 	else if (price >= 100) {
  18. 		price *= 90;
  19. 	}
  20. 	else {
  21. 		price *=100;
  22. 	}
  23. 	if (ceil(100./P) > lenta and price > 90*ceil(100./P)*P){
  24. 		price = 90*ceil(100./P)*P;
  25. 	}
  26. 	else if (ceil(1000./P) > lenta and price > 85*ceil(1000./P)*P) {
  27. 		price = 85*ceil(1000./P)*P;
  28. 	}
  29. 	cout << price;
  30. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/TPT1wi
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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