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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main() {
  4. 	double a;
  5. 	cin >> a;
  6. 	cout << fixed << setprecision(4) << a*4 << a*a;
  7. }
Success #stdin #stdout 0.01s 5316KB
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stdin
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4
stdout
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16.000016.0000
https://ideone.com/TrPNGM
language:
C++14 (gcc 8.3)
created:
9 days ago
visibility:
public

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