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  1. #include <iostream>
  2. #include<cmath>
  3. #include<iomanip>
  4. //Подключаем этот модуль,чтобы установить точность ответа
  5. using namespace std;
  6.  
  7. int main() {
  8. 	double n;
  9. 	cin >> n;
  10. 	cout << fixed << setprecision(5) << (50*(1-(pow(0.25,n))))/(0.75);
  11. 	return 0;
  12. }
Success #stdin #stdout 0s 16064KB
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https://ideone.com/j1hhjS
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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