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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main() { 
  4.     int n, tmp;
  5.     double ans, num ;
  6.     cin >> n;
  7.     ans = 0.0;
  8.  
  9.     for (int i = 1; i <= n; i++) {
  10.         double ii = 1.0 * i;
  11.         cin >> tmp;
  12.         num = 1.0 / ii;
  13.         ans = (ans + num);
  14.     }
  15.  
  16.     cout << fixed << setprecision(6) << ans << "\n";
  17. 	return 0;
  18. }
  19.  
Success #stdin #stdout 0s 4856KB
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stdin
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Standard input is empty
stdout
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0.000000
https://ideone.com/fRzy1Y
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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