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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int n;
  6. cin >> n;
  7. cout << 2*(n-2)+(n-2)*(n-3) << endl;
  8. 	return 0;
  9. }
Success #stdin #stdout 0.01s 5512KB
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stdout
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https://ideone.com/6p2jhv
Zoopark
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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