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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. int main(){
  5.     int n;
  6.  
  7.     std::cin >> n;
  8.  
  9.     std::cout << pow(-1, n+1)/n << "\n";
  10. }
Success #stdin #stdout 0.01s 5320KB
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3
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0.333333
https://ideone.com/aWR3mH
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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